IGNITION MODULE DIAGNOSTICS
Flame Fault
If at any time the main valve fails to close completely and maintains a flame, the full time flame sense circuit will detect it and energize the combustion blower. Should the main valve later close completely removing the flame signal, the combustion blower will power off following the post purge period.
Fault Conditions
Error Mode | LED Indication |
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Internal Control Failure | Steady On |
Air Flow Fault | 1 Flash |
Gas valve failure (stuck open) | 2 Flashes |
Ignition Lockout | 3 Flashes |
The LED located on the ignition module will flash ON for ¼ second, then OFF for ¼ second during a fault condition. The pause between fault codes is 3 seconds.
Flame Sensor Current Check
| FC- | BLACK | |
| RED (+) | ||
S1 | FC+ | ||
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GND |
| LED Display | |
V2 |
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(R)24VAC
L1
IND
NC
V1
P.SW
(W)TH
Ignition Module (Fenwal)
24.0) |
| INSTALLATION DATA |
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Date of Installation: |
| # of Heaters in System: |
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Serial No. |
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| N = Natural Gas | |
Model: | PTS or PTU |
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| L = Propane Gas | |||
Form #43343330 |
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May 08 |
