Install Instructions
64
12 Troubleshooting
Table 12E Troubleshooting Chart - Fault Messages Displayed on Water Heater Interface
Installation & Service Manual
ERROR CODE DESCRIPTION CORRECTIVE ACTION
E00
Invalid lockout code.
• Reset control module.
• Switch power OFF and ON.
• Replace control module.
E01
The control module has detected parameter
settings that are corrupted.
• Replace control module.
E02
(will require a manual
reset once the condition
has been corrected. Press
the RESET button on the
display to reset.)
The actual fan RPM is more than 30% above
or below the fan speed RPM target.
• Vent/air intake lengths exceed the maximum allowed
lengths. Refer to Section 2 - General Venting for
proper lengths.
• Check for obstruction or blockage in the vent/air
intake pipes or at terminations.
• Check the wiring connections at the fan and at the
main control board.
• Replace the fan.
• Replace the main control board.
Blown fuse.
• Replace fuse F2 on the control board, see page 60
of this manual.
E04
(will require a manual
reset once condition has
been corrected. Press
the RESET button on the
display to reset.)
Either the optional flow switch or the optional
low water cutoff is not making.
• Check pump operation on a call for heat.
• Check for closed valves or obstructions in the
piping.
• Verify system is full of water and all air has been
purged from the system.
• Check for loose or misplaced jumpers if flow switch
or LWCO is not installed.
Blown fuse.
• Replace fuse F3 on the control board, see page 60
of this manual.
E05
(will require a manual
reset once the condition
has been corrected. Press
the RESET button on the
display to reset.)
The flame detector circuit is seeing a flame
signal when the gas valve is closed.
• Verify flame is not present. If present, turn off gas
supply and replace gas valve.
• Check supply voltage for proper polarity.
• Check external wiring for voltage feedback.
• Check the flame rod and make sure it is clean.
• Check the internal wiring for bad connections.
• Replace main control board.