Drive and Fan Communication Errors
If the I/O board ever fails to communicate with the fan or drive,
the I/O board will set a communication error and send the error
code to the control. The control will allow the I/O board to retry
communications 3 times. If retries remain when the error is re-
ceived, the error will be treated as a communication error where
the error is displayed until communication is re-established. The
control will pause all operation for 1 minute while allowing the
fan or drive to fully power down before retrying. During this 1
minute delay, the control will display "Drive Comm Error" for
drive communication errors or "Fan Comm Error" for fan com-
munication errors. Once 1 minute has expired, the control will
power up the drive and fan and attempt to re-establish communi-
cations. If the I/O board is unable to establish communication af-
ter 3 retry attempts, the control will then treat this error as a fatal
error.
General Drive Errors
The handling of this error will be determined by the error code
received. Regardless of which error code is received, when this
error is set, the control will terminate the cycle if a cycle was run-
ning and display "Drive Motor Error XXX" where "XXX" repre-
sents the error code. Refer to
Error Code
Descriptions
Number of Re-
tries
1
Communication Er-
ror
Unlimited
2
High DC Bus Error 4
4
Stall Error
4
5
Coherence Check
Error
4
6
IPM Overtemp Er-
ror
0
8
Current Limit
Reached Error
4
9
460V Drive Over-
current Error
4
10
Low DC Bus Error
9
11
Motor Overload Er-
ror
1
12
Microcontroller
Fault Error
1
13
Hall Sensor Error
3
Table 9
General Fan Errors
When this error is set, the control will terminate the cycle and ei-
ther enter Machine Error Mode or remain in End of Cycle Mode
while displaying an error code on the display. If Machine Error
Mode was entered, the control will turn on the Machine Error
Tone. The display will show the Message Menu with "FAN MO-
TOR ERROR XXX" where "XXX" is the specific error code. Re-
fer to
.
Error Code
Descriptions
Number of Re-
tries
1
Communication Er-
ror
Unlimited
2
High DC Bus Error 4
4
Stall Error
4
5
Coherence Check
Error
4
6
IPM Overtemp Er-
ror
0
8
Current Limit
Reached Error
4
9
460V Drive Over-
current Error
4
10
Low DC Bus Error
9
12
Microcontroller
Fault Error
1
Table 10
General ICM Errors
This error is set when the Ignition Control Module (ICM) com-
municates an error code to the I/O board. If the error received is a
Lockout Error, an Auto-Ignite Retry Error will be set. If a differ-
ent error code is received, the control will handle the error as de-
scribed below. When one of these errors is displayed, the display
will show the message page "ICM Error X" where "X" represents
the error code. Refer to
.
Descriptions
Error Code
False Flame Error
1
Reset Shorted Error
2
Hardware Fault Error
3
Table 11
If the False Flame Error is received, the control will turn off the
heat for fifteen (15) seconds and the error will be treated as an
end of cycle error. The error will be displayed if the False Flame
Diagnostics Menu
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Part No. 70600001ENR6
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