E14
Pennco
Modulation / Fan Speed Control Fault
Boiler display shows E14 and burner output seems incorrect
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Faulty modulating gas valve, Defective fan speed control on board, Loose modulation signal wiring, Sticking inducer fan
How to Fix / Troubleshooting
Safety first: Turn off power and gas before accessing gas valve or fan wiring.
- Visual inspection: Check the modulating gas valve wiring harness and the inducer fan connector for secure attachment and no visible damage.
- Listen for fan speed changes: On a call for heat, the inducer should ramp up and down. If it runs at one speed or not at all, the fan or control may be faulty.
- Do not adjust gas valve: Modulating gas valves require combustion analysis equipment for proper setup. Do not attempt to adjust without training.
- Professional service: A technician should verify modulation signals from the control board and test the gas valve and fan performance.
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Repair Difficulty
Professional Required
5/5
Required Part
Modulating Gas Valve
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