Error Codes - American Water Heater 160X3P Manual

All units have self-diagnostics. If there is a problem with the unit, a numerical error code will display on the temperature controller
of indoor models or on the TM-RE43 Remote Controller (if installed). Installation related problems can also produce an error
code(s). If the remote/temperature controllers are not working, the green LED on the computer board will flash a code pattern.
(The green LED is located beside the DIP switches as shown in Figure 3).
Error code indicator on
the built-in controller
Figure 3: Error Code Indicators.
If you are working with a water heater that is part of an Easy-
Link system, we recommend that you troubleshoot the unit as
an individual unit and not as part of the system. Follow these
steps prior to troubleshooting a child unit:
1. Disconnect power to all the water heaters in the Easy-
Link system. The ON/OFF button on the water heater and
remote does NOT disconnect power to the water heater.
You must physically disconnect power to the water heater.
2. Close isolation valves to the water heater.
Table 2: Error and Flash Codes
ERROR CODE GREEN LED ON
COMPUTER BOARD
031 One Flash
051 Three Flashes
101 Five Flashes

ERROR CODES

Error code indicator on
the remote controller
3. Disconnect both linking wires from the bottom of the
4. If the unit is not an end unit, take the ends of both linking
5. Turn power to the water heaters back on, then
SYMPTOM OR ISSUE
Incorrect DIP switch
setting
Combustion Air and/or
Exhaust Gas Blockage
Combustion Air and/or
Exhaust Gas Blockage
On-Demand Water Heater Service Handbook for X3P Models
Computer board
heater.
wires which you unplugged and connect them together.
One end is male and the other is female; they will connect
together.
troubleshoot as necessary.
TROUBLESHOOTING PROCEDURE
Check the DIP switch settings on the PCB (Part #701).
See Error Code 991
See Error Code 991
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