Part 14 - Troubleshooting
Warning
Observe the following precautions when servicing the appliance. Failure to comply with these may result in
fire, property damage, serious injury or death.
Servicing the Appliance
Disconnect or shut off all energy sources to the appliance: 120VAC power, water and gas.
Identify and mark wires before disconnecting or removing them. Wiring errors can cause improper
and dangerous operation.
Never bypass electrical fuses or limit devices.
Use proper personal protective equipment (PPE) i.e. eye protection, safety
footwear. Verify proper operation after servicing.
These procedures should only be performed by qualified service personnel, when abnormal operation of the
appliance is suspected. The appliance incorporates a sophisticated electronic automatic control system which
normally responds appropriately to varying conditions. If the appliance operation appears to be incorrect, or it
is not responding at all to a demand for heat, the following is suggested to determine and correct the problem.
Displaying faults
LED indicators show the main operational status of the appliance.
A: OK: the system is functioning properly.
B: REFILL: the CH pressure is low and the system needs to be filled.
C: SERVICE: a fault has occurred. See table 14.1 Fault codes.
Fault history
To view the 8 most recent faults simultaneously press [P5] and [P6] to read out the 8 most recent fault codes.
Subsequently Press [P3] or [P4] to go through the list. Refer to table14.1 for description of the fault belonging
to the code and the proper corrective action that needs to be performed.
.
69
To Next Page
Loading...