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E03 - System Sensor Failure

PostPosted: Thu May 24, 2012 10:51 pm
by HTP
Fault Code EO3 - System Sensor Failure

This screen shows that there is a problem with the system sensor circuit. The circuit could be open or shorted. Possible reasons for this error are:
    There is no system sensor connected to the Master Boiler. The system sensor is faulty. There is a short circuit in the system sensor wiring; possibly from a staple placed through the wire, or damage to the wire causing both conductors to touch. The system sensor wiring is open due to defect or damage.