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Date: 8-4-2010
Revision: 0
Form: 2396
Code Description Recommended Troubleshooting of Lockout Codes Code
32-46 Internal fault:
Safety Key 0
through 14
L
47 Flame Rod to
ground leakage
H
48 Static flame (not
flickering)
41
H
49 24VAC voltage low/
high
1. Check the Module and display connections.
2. Check the Module power supply and make sure that both
frequency, voltage and VA meet the specifications.
H
50 Modulation fault H
51 Pump fault H
52 Motor tachometer
fault
Internal sub-system fault.
1. Review alert messages for possible trends.
2. Correct possible problems.
H
53 AC inputs phase
reversed
1. Check the Module and display connections.
2. Check the Module power supply and make sure that both
frequency and voltagemeet the specifications.
3. On 24Vac applications, assure that J4 terminal 10 and J8
terminal 2 are connected together.
L
54-57 RESERVED
58 Internal fault: HFS
shorted to IAS
L
59 Internal Fault: Mux
pin shorted
L
60 Internal Fault: HFS
shorted to LFS
Internal Fault.
1. Reset Module.
2. If fault repeats, replace module
L
61 Anti short cycle H
62 Fan speed not
proved
Will not be a lockout fault. Hold Only.
H
63 LCI OFF 1. Check wiring and correct any faults.
2. Check Interlocks connected to the LCI to assure proper
function.
3. Reset and sequence the module; monitor the LCI status.
4. If code persists, replace the module
H
64 PII OFF 1. Check wiring and correct any faults.
2. Check Preignition Interlock switches to assure proper
functioning.
3. Check the valve operation.
4. Reset and sequence the module; monitor the PII status.
5. If code persists, replace the module.
L
65 Interrupted Airflow
Switch OFF
H or L
66 Interrupted Airflow
Switch ON
1. Check wiring and correct any possible shorts.
2. Check airflow switches to assure proper functioning.
3. Check the fan/blower operation.
4. Reset and sequence the module; monitor the airflow status.
5. If code persists, replace the module.
H or L
67 ILK OFF 1. Check wiring and correct any possible shorts.
2. Check Interlock (ILK) switches to assure proper function.
3. Verify voltage through the interlock string to the interlock input
with a voltmeter.
4. If steps 1-3 are correct and the fault persists, replace the
module.
L