John-wood Polaris High-Efficiency Gas User Manual download pdf (Page 26)

TROUBLESHOOTING

Table 5:

Ignition Control Module (ICM) LED Error Codes: (Flashes visible through viewport in access door)

FLASHES INDICATED PROBLEM CONTROL REACTION

1 Pressure Switch Closed SC*

2 Pressure Switch Open SL

3 Failed Ignition SL3

4 Gas Valve Hardware Fault SL

5 Flame Sense Hardware Fault SC

6 False Flame SL**

8 Ignition Control Hardware Fault SL

9 Ignition Control Software Fault SL

Rapid L1 Polarity Detection SC

SL (Soft Lockout): Control Automatically resets after 60 minutes.

SL3 (Soft Lockout/Hard Lockout): Control automatically resets after 60 minutes, with a maximum of 3 resets, followed by hard lockout requiring service.

SC (Self Clearing): Control will function normally as soon as it no longer detects the previously indicated fault.

* when pressure switch or blower relay opens

** when flame is no longer sensed.

† Blower Isolation Relay is used on models 150,000 BTU/Hr and above.

Note: If unit goes into a soft or hard lock-out the ignition control module can be reset by cycling power to the water heater.

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John-wood Polaris High-Efficiency Gas User Manual Page 26

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