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General| Brand | Lochinvar |
|---|---|
| Model | AWH0400NPM |
| Category | Water Heater |
| Language | English |
Critical safety precautions and warnings for performing maintenance.
Detailed procedure for cleaning the heat exchanger surfaces.
Testing and replacement procedures for the safety relief valve.
Required tools and initial system checks before diagnosing faults.
Procedure for inspecting and replacing blown control module fuses.
Diagnosing faults related to no display and no burner operation.
Sensor resistance values at various temperatures for diagnostics.
Diagnosing faults related to noisy operation and no pump operation.
Diagnosing gas pressure and air pressure switch faults.
Diagnosing anti-cycling and flame failure ignition faults.
Diagnosing faults related to loss of flame signal during operation.
Diagnosing flame detection and high limit trip faults.
Diagnosing faults related to fan speed being too low or too high.
Diagnosing faults related to unit modulation and sensor readings.
Diagnosing faults related to relief valve opening.
Diagnosing flow switch and blocked drain switch faults.
