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Heating  Heating

Brand

U.S.Boiler Company U.S.Boiler Company List all brands

Type:

MPO-IQ189 view MPO-IQ189 List all types

Error code:

ErP9
List all errors


Error code: ErP9

Cause of error code ErP9

No Ignition, Check Cad Cell

Solution for error code ErP9

The burner lit very late during the trial for ignition and is susceptible to not lighting.
-Check cad cell for proper alignment and clean if necessary.
-Check burner adjustments (refer to burner manufacturers instructions)
-Check electrodes and spring contacts (if equipped) and adjust per manufacturers  recommendations.
-Check if the pump is generating adequate pressure.
-Check the fuel supply lines and filter for obstructions.


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