Error
00, 01, 02, 03, 04 - Memory, Ram & EEPROM Test Errors
Description:
Errors 00 through Error 04 check upper PCA memory locations, RAM memory
locations and EEPROM checksum during the power up test sequence. If a fault is
found during the power up test sequence, the appropriate error code will be
displayed.
Possible
Causes
·
These
errors messages almost always indicate an upper PCA problem when they are
consistently displayed. Failures causing these error messages to be displayed
are rare.
Possible
Remedies
·
If
the error message is consistently displayed when the unit is powered up, the
upper PCA should be replaced. It is possible to see one of these messages
displayed intermittently due to external causes. If the units A.C. input
significantly dips during the power up test sequence the test could fail
resulting in one of these messages being displayed. Treadmills operating on non-dedicated A.C. circuits may see these
messages displayed on an intermittent basis
Error
05 - Key Depressed at Power Up
Description:
The power up test sequence has detected a key in the operated condition. The
power up test sequence is performed every time the unit is turned on (powered
up). This test is performed because a permanently stuck key will inhibit the
correct operation of the unit.
Possible
Causes
·
A
key on the display housing is permanently stuck in the operated condition.
·
One
of the upper PCA’s keypad interface chips has failed.
·
Liquid
(perhaps perspiration) is present on the surface of a touch sensitive display.
Possible
Remedies
·
Remove
the keypad connector cable from the upper PCA. Restart the power up sequence,
if the ERROR 5 is no longer present, the keypad is the cause. The keypad is
typically part of the display housing. Replace the display housing to correct
the problem.
·
Remove
the keypad connector cable from the upper PCA. Restart the power up sequence,
if the ERROR 5 is still present, the upper PCA is the cause. Replace the upper
PCA to correct this problem. Most upper PCA’s are provided without software.
Therefore, the software (chip) must be removed from the upper PCA being replaced
and re-installed on the replacement upper PCA.
·
Wipe
the surface of the touch sensitive display clean of all liquid. Restart the
power up sequence, if the ERROR 5 is no longer present, the liquid was the
cause.
Error
09 - Lower PCA Memory Test Errors
Description:
Error 09 checks lower PCA memory locations during the power up test sequence.
If a fault is found during the power up test sequence, error 09 will be
displayed. This error code is only used on products utilizing the dual
microprocessor system.
Possible
Causes
·
This
error message almost always indicates a lower PCA problem when it is
consistently displayed. Failures causing this error message to be displayed are
rare.
Possible
Remedies
·
If
the error message is consistently displayed when the unit is powered up, the
lower PCA should be replaced. It is possible to see this error message
displayed intermittently due to external causes. If the units A.C. input
significantly dips during the power up test sequence the test could fail
resulting in this message being displayed. Treadmills operating on
non-dedicated A.C. circuits may see this message displayed on an intermittent
basis.
Error
10 - Line Frequency out of Acceptable Range
Description:
This error is present on treadmills using an SCR motor controller and the C544
EFX. Because the treadmill running belt speed (and C544 resistance) is derived
from the A.C. line frequency, it is critical that the unit’s operating system
can correctly identify the A.C. line as either 50 Hz. or 60 Hz. and ensure that
the line frequency is within acceptable tolerances.
Possible
Causes
·
The
treadmill is operating on a non-dedicated A.C. circuit.
·
On
120 V.A.C. circuits the A.C. hot and A.C. neutral wires are reversed.
·
Incorrect
jumper setting on the upper PCA
·
The
fuse feeding the treadmills stepdown transformer is blown.
·
The
A.C. line frequency is incorrect.
·
The
A.C. line may be extremely noisy.
Possible
Remedies
·
Treadmills
must be installed on a completely dedicated 20 amp A.C. circuit. Both the hot
and neutral leads must be dedicated to the treadmill. If another piece of
equipment is sharing a circuit with the treadmill it can create enough
electrical noise to make A.C. line frequency identification impossible. The
treadmill’s A.C. circuit must be reconfigured as a completely dedicated 20 amp
circuit.
·
Most
line frequency detection systems monitor the A.C. line frequency on the hot
A.C. line. In the case of a reversed 120 V.A.C circuit, the monitoring is
taking place on the neutral (ground) side of the A.C. line. Many of the
monitoring systems are incapable of detecting line frequency on the neutral
wire. It must first be determined if the reversal is in the A.C. wiring feeding
the treadmill or in the treadmill internal wiring. The hot and neutral wires
can be verified by measuring each in reference to A.C. (green wire) ground. The
hot lead will read full line voltage (typically 105 to 120 V.A.C.) and the
neutral line should read approx. 0 V.A.C.
·
Some
upper PCA’s had jumper setting for use with “SCR” or “PWM” drive circuits. If
the upper PCA jumper was set for “PWM” operation on an SCR unit, error 10 would
be displayed. Change the upper PCA
jumper setting to “PWM” to correct the problem.
·
Some
treadmills (C944 PWM version 2 and C96X PWM version 2) utilized a pair of fuses
feeding the stepdown transformer for the low voltage power supply on the lower
PCA. The A.C. line frequency was monitored on the output of one of the fuses.
If the fuse blew, A.C. line frequency could no longer be detected even though
the treadmill appeared normal otherwise.
·
Even
though unlikely, the A.C. line frequency could actually be out of acceptable
limits. This is more likely to occur in countries where A.C. power systems may
not be well developed and controlled. There may be little that can be done about
this condition. If the source frequency can not be corrected the only
possibility may be replacing the treadmill with a treadmill utilizing a PWM
motor controller. PWM motor controllers do not depend on line frequency for
speed control.
·
Sometimes
A.C. being fed into the distribution system is too electrically noisy to allow
correct line frequency identification. This can be caused by other equipment
within the A.C. distribution system creating the electrical noise. Identifying
the source of the electrical noise can be difficult. There may be little that
can be done about this condition. If the source can not be located or the
source can not be removed or made electrically quiet the only possibility may
be replacing the treadmill with a treadmill utilizing a PWM motor controller.
PWM motor controllers do not depend on line frequency for speed control.
Error
11 - Watchdog (Upper PCA)
Description: The error 11 watchdog monitors the upper PCA
low voltage power. If the low voltage power drops below a preset level, the
error 11 will be displayed.
Possible
Causes
·
A
failure in the upper PCA overloads the low voltage power supply and causes it
to drop below the preset limit.
·
A
fault in the interconnect cable (lower PCA to upper PCA) causing the input
voltage to the upper PCA to be too low.
Possible
Remedies
·
If
the error message is consistently displayed when the unit is powered up, the
upper PCA should be replaced. It is possible to see this message displayed
intermittently due to external causes. If the units A.C. input significantly
dips during the power up test sequence the test could fail resulting in this
message being displayed. Treadmills operating on non-dedicated A.C. circuits
may see this message displayed on an intermittent basis.
·
Substitute
a known good interconnect cable in place of the existing cable to determine if
the interconnect cable is the cause. For the purpose of the test, the
substitute cable should be connected directly between the upper and lower
PCA’s.
Error
12 - Watchdog (Lower PCA)
Description: The error 12 watchdog monitors the lower PCA
low voltage power. If the low voltage power drops below a preset level, the
error 12 will be displayed.
Possible
Causes
·
A
failure in the lower PCA overloads the low voltage power supply and causes it
to drop below the preset limit.
·
A
fault in the interconnect cable (lower PCA to upper PCA) causing the lower PCA
low voltage power supply be too low.
·
A
failure in the upper PCA that overloads the lower PCA low voltage power supply
causing it to be too low.
Possible
Remedies
·
If
the error message is consistently displayed when the unit is powered up, the
lower PCA should be replaced. It is possible to see this message displayed
intermittently due to external causes. If the units A.C. input significantly
dips during the power up test sequence the test could fail resulting in this
message being displayed. Treadmills operating on non-dedicated A.C. circuits
may see this message displayed on an intermittent basis.
·
Substitute
a known good interconnect cable in place of the existing cable to determine if
the interconnect cable is the cause. For the purpose of the test, the
substitute cable should be connected directly between the upper and lower
PCA’s.
·
Substitute
a known good upper PCA for the existing PCA to determine if the upper PCA is
the cause
Error
13 - Fan at Incorrect Speed
Description: This error monitored the rotating speed of
an external cooling fan attached to the drive motor on 9.55, C954 version 1 and
C956 version 1 treadmills. The system used an optical speed sensor that read an
infrared signal reflected back to the speed sensor from a target attached to
the hub of the cooling fan.
Possible
Causes
·
It
was determined that the fan speed sensing system was unreliable and false error
13 indications were being displayed. The lower software was changed to remove
all error 13 indications.
·
If
the installed software includes an error 13, the fan may be clogged with dust
and/or dirt.
Possible
Remedies
·
Replace
the lower PCA software with the most current lower PCA software available.
·
Clean
the fan. If the error 13 still occurs, replace the lower PCA software with the
most current lower PCA software available.
Error
20 - Too many Maximum Power Requests in 1 Second Description This error
monitors the treadmills power bit reading when the treadmill was operating at
speeds of 1 mile per hour or less. Power bits indicate the relative time that
the motor controller drive circuit is turned on. Therefore power bits are an
indication of the amount of power the load is demanding from the motor
controller. Error 20 indicates that at a speed of 1 mile per hour or less an
excessive amount of power is being demanded from the motor controller for an
excessive period of time.
Possible
Causes
·
The
treadmill user (especially a heavier user) is standing on the drive belt as
they start the running belt into motion. Starting the running belt into a very
heavy load can cause the error 20 condition.
·
The
running bed and/or running belt is badly worn and the error 20 occurs when the
user steps onto the running belt.
·
The
drive motor brushes are badly worn and not making sufficient contact with the
drive motor commutator. The error 20 occurs when the user steps onto the
running belt. The treadmill may also bog down when the user steps onto the running
belt.
·
On
treadmills utilizing an SCR motor controller, a leaky or shorted drive motor
filter capacitor could raise the current demand sufficiently to cause the error
20.
·
On
treadmills utilizing an SCR motor controller, a leaky or shorted drive motor inductor
could raise the current demand sufficiently to cause the error 20.
A
shorted or de-magnetized drive motor is causing the high power demand.
Possible
Remedies
·
The
user should be instructed to straddle the running belt and start the treadmill
at a low speed (1 mile per hour or less) and then step onto the running belt.
·
A
clamp-on A.C. ammeter must be used to determine the amount of A.C input current
being drawn by the treadmill under no load and loaded conditions. The current
readings can be used to determine the condition of the running belt and/or
running bed. These same readings should be taken on a similar unit with a known
good running belt and running bed. Those readings can then be used as a
benchmark for future use. Replace the running belt and/or running bed as
required. Remember, many running beds are double sided and the bed can be
flipped over rather than being replaced.
·
Replace
both drive motor brushes.
·
A
clamp-on ammeter should be used to measure the A.C. input current at no load.
The filter capacitor should then be electrically isolated from the drive motor
circuit. The drive motor leads must be kept intact so that the drive motor will
operate with the filter capacitor removed from the circuit. The no load A.C.
input current should be measured again, if the A.C. input current is
significantly lower, replace the filter capacitor.
·
Use
the same procedure as in step 4 above, except remove and isolate the inductor
from the drive motor circuit instead of the filter capacitor.
·
A
known good drive motor must be substituted for the existing drive motor.
Error
21 - Too many Maximum Consecutive Power Requests
Description: This error monitors the treadmills power bit
reading when the treadmill was operating at speeds above 1 mile per hour. Power
bits indicate the relative time that the motor controller drive circuit is
turned on. Therefore power bits are an indication of the amount of power the
load is demanding from the motor controller. Error 21 indicates that at a speed
of greater than 1 mile per hour an excessive amount of power is being demanded
from the motor controller.
Possible
Causes
·
The
running bed and/or running belt is badly worn and the error 21 occurs while the
treadmill is being used.
·
The
drive motor brushes are badly worn and not making sufficient contact with the
drive motor commutator. The error 21 occurs while the treadmill is being used.
The treadmill may also bog down when the load or speed is increased.
·
Some
lower PCAs require a jumper when installed in 120 V.A.C. treadmills.
·
On
treadmills utilizing an SCR motor controller, a leaky or shorted drive motor
filter capacitor could raise the current demand sufficiently to cause the error
21.
·
On
treadmills utilizing an SCR motor controller,a leaky or shorted drive motor
inductor could raise the current demand sufficiently to cause the error 21.
·
A
shorted or de-magnetized drive motor is causing the high power demand.
Possible
Remedies
·
A
clamp-on A.C. ammeter must be used to determine the amount of A.C input current
being drawn by the treadmill under no load and loaded conditions. The current
readings can be used to determine the condition of the running belt and/or
running bed. These same readings should be taken on a similar unit with a known
good running belt and running bed. Those readings can then be used as a
benchmark for future use. Replace the running belt and/or running bed as
required. Remember, many running beds are double sided and the bed can be
flipped over rather than being replaced.
·
Replace
both drive motor brushes.
·
If
the lower PCA requires the 120 VAC jumper and the jumper is not installed, the
treadmill will typically display an error 21 between 7 and 8 M.P.H. Install the
lower PCA jumper to correct this problem. WARNING:Be sure the treadmill is a
120 V.A.C. unit before installing the jumper. Installing the jumper on a 240
V.A.C. will cause the lower PCA to fail.
·
A
clamp-on ammeter should be used to measure the A.C. input current at no load.
The filter capacitor should then be electrically isolated from the drive motor
circuit. The drive motor leads must be kept intact so that the drive motor will
operate with the filter capacitor removed from the circuit. The no load A.C.
input current should be measured again, if the A.C. input current is
significantly lower,replace the filter capacitor.
·
Use
the same procedure as in step 4 above, except remove and isolate the inductor
from the drive motor circuit instead of the filter capacitor.
·
A
known good drive motor must be substituted for the existing drive motor
Error
22 - No Motor Pulses at Start Up
Description: Error 22 indicates that the drive motor
(running belt) has been instructed to start, by either manual or program
control, and the monitoring system has not received any response from the speed
sensing system indicating that the drive motor has started.
Possible
Causes
·
The
treadmill utilizes an optical (infrared) speed sensor and the line of sight
between the speed sensor and the speed sensor target is obstructed.
·
Drive
motor brushes are bad.
·
The
speed sensor position relative to the speed sensor target is incorrect.
·
The
speed sensor potentiometer adjustment is incorrect (when equipped).
·
The
speed sensor is inoperative.
·
The
lower PCA is bad.
·
The
lower PCA to upper PCA interconnect cable is bad.
·
The
upper PCA is bad
Possible
Remedies
·
Carefully,
vacuum out the drive motor compartment with a static safe vacuum cleaner. Pay
special attention to the area between the speed sensor and speed sensor target.
·
If
the motor brushes do not make sufficient contact with the motor commutator, the
drive motor will not start when drive voltage is applied. Replace both drive
motor brushes.
·
Adjust
the speed sensor position so that the space between the speed sensor and the
speed sensor target is 3/16 inch and so that the speed sensor photo eye is
aimed at the larger portion of the targets wedge shaped section. On hall effect
speed sensors (magnetic sensor) the space between the end of the speed sensor
and the flywheel tooth should be 3/16 inch.
·
Locate
the speed sensor potentiometer on the lower PCA. Set the speed sensor
potentiometer at mid-range. Start the treadmill and increase the speed to 6
mile per hour. Carefully adjust the speed sensor potentiometer to the point
where the treadmill is operating the smoothest. Increase the treadmills speed
to full speed at repeat the previous adjustment. These two adjustments are
typically small and are usually only a matter of fine tuning.
·
If
the speed sensor in inoperative the drive motor will start and run briefly
before the error 21 occurs. If it is possible to access the speed sensor
wiring, measure the D.C. voltage between the speed sensors leads Two of the
leads will constantly read approximately 5 Vdc. Two of the leads will toggle
between 0 Vdc. and 5 Vdc. as you slowly rotate the speed sensor target. If you
do not see both measurements above, the speed sensor is inoperative and must be
replaced. In some cases the speed sensor is mounted on the lower PCA and the
the lower PCA must be replaced.
·
Substitute
a known good lower PCA to determine if the lower PCA is bad.
·
Substitute
a known good interconnect cable for the existing cable.
·
Substitute
a known good upper PCA to determine if the upper PCA is bad.
Error
23 - Motor Pulses Missing after Start Up
Description: Error 23 indicates that the speed sensor
signal was lost while the treadmill was in operation.
Possible
Causes
·
The
treadmill utilizes an optical (infrared) speed sensor and the line of sight
between the speed sensor and the speed sensor target is obstructed.
·
The
speed sensor position relative to the speed sensor target is incorrect.
·
The
speed sensor potentiometer adjustment is incorrect.
·
The
speed sensor or drive motor wiring has an intermittent connection.
·
The
drive motor brushes are badly worn and not making sufficient contact with the
drive motor commutator
·
The
lower PCA is bad.
·
The
lower PCA to upper PCA interconnect cable is intermittent.
·
The
upper PCA is bad
Possible
Remedies
·
Carefully,
vacuum out the drive motor compartment with a static safe vacuum cleaner. Pay
special attention to the area between the speed sensor and speed sensor target.
·
Adjust
the speed sensor position so that the space between the speed sensor and the
sped sensor target is 3/16 inch and so that the speed sensor photo eye is aimed
at the larger portion of the targets wedge shaped section
·
Locate
the speed sensor potentiometer on the lower PCA. Set the speed sensor
potentiometer at mid-range. Start the treadmill and increase the speed to 6
mile per hour. Carefully adjust the
speed sensor potentiometer to the point where the treadmill is operating the
smoothest. Increase the treadmills speed to full speed at repeat the previous
adjustment. These two adjustments are typically small and are usually only a
matter of fine-tuning.
·
Physically
test all wiring and wire connections associated with the speed sensor and drive
motor. Replace or repair wiring and wire connections as appropriate.
·
Replace
both drive motor brushes.
·
Substitute
a known good lower PCA to determine if the lower PCA is bad.
·
Substitute
a known good interconnect cable for the existing cable.
·
Substitute
a known good upper PCA to determine if the upper PCA is bad.
Error
24 - Reduce Speed Requested, Speed is not Reducing
Description:
Error 24 indicates that the the speed control system has instructed the
treadmill to slow down and the response from the speed sensing systemindicates
that the treadmill has not slowed. This error will typically occur when the
actual operating speed is greater than the speed being requested under either
manual or program control.
Possible
Causes
·
The
treadmill user (especially a heavier user) is operating the treadmill at a
relatively a low speed and a high incline. Some treadmills, under the above
conditions, will operate at a speed slightly higher than the selected speed
because of the combination of very low running bed and running belt friction
and the downward force of the users weight.
·
The
lower PCA is bad.
Possible
Remedies
·
The
user must be informed that this error can occur under low speed, high incline
conditions. They must also be aware that the treadmill speed control system
must test for an over speed condition. The test and resulting error condition
is for their protection.
·
The
typical lower PCA failure mode producing an error 24, causes the drive motor to
start immediately upon power up (without a manual or program drive motor start
request). Replace the lower PCA.
Error
25 - Motor Pulse Count over Acceptable Limit
Description: This error monitors the treadmills power bit
reading. Power bits indicate the relative time that the motor controller drive
circuit is turned on. Therefore power bits is an indication of the amount of
power the load is demanding from the motor controller. The treadmill software
sets a maximum allowable power bit limit. Error 25 indicates that the maximum
power bit limit is being exceeded.
Possible
Causes
·
The
running belt and/or running bed is badly worn.
·
On
treadmills utilizing an SCR motor controller, a leaky or shorted drive motor
filter capacitor could raise the current demand sufficiently to cause the error
25.
·
On
treadmills utilizing an SCR motor controller,a leaky or shorted drive motor
inductor could raise the current demand sufficiently to cause the error 25.
·
A
shorted or de-magnetized drive motor is causing the high power demand.
Possible
Remedies
·
A
clamp-on A.C. ammeter must be used to determine the amount of A.C input current
being drawn by the treadmill under no load and loaded conditions. The current
readings can be used to determine the condition of the running belt and/or
running bed. These same readings should be taken on a similar unit with a known
good running belt and running bed. Those readings can then be used as a
benchmark for future use. Replace the running belt and/or running bed as
required. Remember, many running beds are double sided and the bed can be
flipped over rather than being replaced.
·
A
clamp-on ammeter should be used to measure the A.C. input current at no load.
The filter capacitor should then be electrically isolated from the drive motor
circuit. The drive motor leads must be kept intact so that the drive motor will
operate with the filter capacitor removed from the circuit. The no load A.C.
input current should be measured again, if the A.C. input
current is significantly
lower,replace the filter capacitor.
·
Use
the same procedure as in step 4 above, except remove and isolate the inductor
from the drive motor circuit instead of the filter capacitor.
·
A
known good drive motor must be substituted for the existing drive motor.
Error
26 - Motor Pulse Width Incorrect
Description: This error monitors the speed sensor signal
and verifies the speed sensor signal is appropriate for the requested speed. If
the speed sensor signal is incorrect or erratic an Error 26 will be displayed.
Possible
Causes
·
The
treadmill utilizes an optical (infrared) speed sensor and the line of sight
between the speed sensor and the speed sensor target is obstructed.
·
The
speed sensor position relative to the speed sensor target is incorrect.
·
The
speed sensor potentiometer adjustment is incorrect (when equipped).
·
The
speed sensor target is damaged.
Possible
Remedies
·
Carefully,
vacuum out the drive motor compartment with a static safe vacuum cleaner. Pay
special attention to the area between the speed sensor and speed sensor target.
·
Adjust
the speed sensor position so that the space between the speed sensor and the
speed sensor target is 3/16 inch and so that the speed sensor photo eye is
aimed at the larger portion of the targets wedge shaped section. On hall effect
speed sensors (magnetic sensor) the space between the end of the speed sensor
and the flywheel tooth should be 3/16 inch.
·
If
the treadmill utilizes a speed sensor potentiometer, locate the speed sensor
potentiometer on the lower PCA. Set the speed sensor potentiometer at
mid-range. Start the treadmill and increase the speed to 6 mile per hour.
Carefully adjust the speed sensor potentiometer to the point where the
treadmill is operating the smoothest. Increase the treadmills speed to full
speed at repeat the previous adjustment. These two adjustments are typically
small and are usually only a matter of fine-tuning.
·
Most
speed sensor targets consist of a circular arrangement of alternate black and
silver sections. If the speed sensor target is torn or badly scratched the
speed sensor may receive an incorrect reading. Replace the speed sensor target.
Error
27 - Too Much Drive Motor Current
Description: Some treadmill motor controllers monitor the
amount of current being delivered to the drive motor. The software sets a
maximum amount of allowable drive motor current. This error indicates that
maximum drive motor current has been reached.
Possible
Causes
·
The
running belt and/or running bed is badly worn.
·
A
shorted or de-magnetized drive motor is causing the high power demand.
Possible
Remedies
·
A
clamp-on A.C. ammeter must be used to determine the amount of A.C input current
being drawn by the treadmill under no load and loaded conditions. The current
readings can be used to determine the condition of the running belt and/or
running bed. These same readings should be taken on a similar unit with a known
good running belt and running bed. Those readings can then be used as a
benchmark for future use. Replace the running belt and/or running bed as
required. Remember, many running beds are double sided and the bed can be
flipped over rather than being replaced.
·
A
known good drive motor must be substituted for the existing drive motor.
Error
28 - Temperature Too High
Description: Some treadmill motor controllers monitor the
temperature of the motor controller output switching device. Typically, these
motor controllers use a fan to force cool the output devices heat sink. This
error indicates that the heat sink temperature has exceeded maximum.
Possible
Causes
·
The
lower PCA cooling fan is clogged.
·
The
lower PCA cooling fan is inoperative.
·
The
running belt and/or running bed is badly worn.
·
The
lower PCA is defective.
·
A
shorted or de-magnetized drive motor is causing the high power demand
Possible
Remedies
·
Check
the cooling fan mounted on the lower PCA to ensure that the fan is not clogged
with dust. Thoroughly clean the fan and ensure that it spins freely. Some lower
PCA’s do not have a cooling fan and some lower PCA’s have the fan mounted on
the underside of the the lower PCA and are not immediately visible.
·
The
lower PCA is clean and unobstructed but the fan does not spin. Ensure that the
fan wiring is securely and correctly connected to the lower PCA. If the fan is
unobstructed and the fan wiring is good, replace the lower PCA.
·
A
clamp-on A.C. ammeter must be used to determine the amount of A.C input current
being drawn by the treadmill under no load and loaded conditions. The current
readings can be used to determine the condition of the running belt and/or
running bed. These same readings should be taken on a similar unit with a known
good running belt and running bed. Those readings can then be used as a
benchmark for future use. Replace the running belt and/or running bed as
required. Remember, many running beds are double sided and the bed can be
flipped over rather than being replaced.
·
Substitute
a known good lower PCA to determine if the lower PCA is defective.
·
Substitute
a known good drive motor to determine if the drive motor is defective
Error
30, 31, 32 and 33 - Communications Error
Description: Errors 30 through 33 all indicate the loss
of communications or erratic communications between the microprocessors in the
upper PCA and the lower PCA. The trouble shooting procedures for the entire are
essentially the same. Error 30 is defined as upper PCA not receiving from lower
PCA. Error 31 is defined as faulty data received from lower PCA. Error 32 is
defined as lower
PCA
not receiving from upper PCA. Error 33 is defined as faulty data received from
upper PCA
Possible
Causes
·
An
upper PCA to lower PCA interconnect cable is bad.
·
The
interconnect cable at the upper PCA was mistakenly plugged into the CSAFE
connector.
·
A
5.17 EFX equipped with version 1.01 upper and lower software.
·
A
5.17 with mismatched upper and lower software.
·
A
defective lower PCA.
·
A
defective upper PCA.
Possible
Remedies
·
Substitute
a know good interconnect cable between the upper and lower PCAs to determine if
the interconnect cable is defective.
·
Remove
the interconnect cable from the CSAFE connector and insert it in the correct
upper PCA connector.
·
Replace
the 5.17 upper and lower software with the most current software versions.
·
If
only one of the upper or lower software is version 1.01, replace the version
1.01 software with the most current version of software.
·
Substitute
a known good lower PCA to determine if the lower PCA is defective.
·
Substitute
a known good upper PCA determine if the upper PCAs defective.
