Fenwal 05‑332161‑103 is an automatic ignition control module used in high‑efficiency boilers (Teledyne Laars E0180400). Common failure points for this class of units include burned or damaged ICs, failed MOSFETs, and corrosion on the power input pins. First‑check steps: verify 24 V DC supply to the module, inspect all I/O connections for continuity and visible damage, and review any error codes displayed on the boiler’s diagnostic panel. If power is present but no ignition occurs, test the output relays and check for shorted or open MOSFETs before proceeding with component replacement.[oss-gpt-20b] |
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145 Rockwell Place Ct
Tobaccoville, NC 27050
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Industrial Electronic Repair
931-E S. Main St #204
Kernersville, NC 27284
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