Errors

Boiler type MPO-IQ189

Error code ErP18

Cause:

Internal Error, Electronics Failure

Solution:

The Erp 18 display may indicate any one of the following:
Check Oil Primary and Option Panel Displays:
-If Option Panel display shows “Err 3“, IQ Option Card Communication Error: the Erp 18error is caused by the option card. Replace defective card if error persists
-If The Oil Primary is locked out with “Internal Error” replace control if the error persists.