A.O. Smith THR-160, Инструкция по установке и руководство по эксплуатации и уходу

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Residen al Gas Tankless Water Heater Use and Care Guide • 57
Error Codes
The water heater has self-diagnos c func ons for safety and convenience when troubleshoo ng.
If there is a problem with the installa on or the unit, the error code associated with that failure will be displayed on the built-in
controller or remote controller. The display will
fl ash E and the three digit number. It will show leading zeros. Example: E002
Error codes in the cascade system are di ff erent. The heater number and E### (three digit number) will alternately fl ash on the
parent unit UIM. The child unit in error will fl ash the E### (three digit number) on it’s UIM.
Consult the the table below for the descrip on of each error code.
Fault Analysis of Error Codes
If the water heater is displaying an error code, please check the following. A er checking, consult with the manufacturer.
Table 24: Error Code Fault Analysis
Error
Code
Error Type Procedure
E002 Hi-Limit Switches
1. Manual Hi-Limit Switch on water outlet tripped. Check the switch for proper
opera on. Press the reset bu on (center of the switch), to reset it. NOTE: You
will hear and feel the switch click when rese ng it.
If the high limit switch con nues to trip contact a quali
fi ed service technician.
2. Automa c Hi-Limit Switch on burner door tripped. If the automa c Hi-limit
switch trip has occurred, it cannot be reset and must be replaced. Contact a
quali
fi ed service technician.
E006 PCB Hardware Fault
1. Check PCB wiring for loose, damaged, or cut wires/connectors. Correct any loose
connec ons and replace any damaged wires/connectors. If all wires/connectors
are intact, replace the PCB.
E010 Frequency Fault
1. PCB has detected an incorrect power supply frequency. Note the default fre-
quency is 60 Hz. Con fi rm that C07 is set to the correct frequency of the supply
power. See Table 18 to access modes
2. If the se ng is correct and the error s ll occurs contact a quali fi ed service
technician.
E011 PCB - Memory
1. The water heater will con nue to operate while in this error code is fl ashing,
however, the recircula on pump will be disabled. If this heater is part of a cas-
cade system, then the system will be a
ff ected based on the heater’s se ng.
• Parent Heater: The cascade system will not operate. Remove this heater from
the cascade system and set a di ff erent heater as the Parent.
• Child Heater: This heater will not operate. The rest of the cascade system will
con nue to run.
E036 Flame Failure
WARNING! Working on an energized circuit can result in severe injury or death from
electrical shock.
1. Check the fl ame sensor wire for a short or disconnec on. Correct any loose
connec ons and replace any damaged wire/connector. If the error s ll occurs,
contact a quali
fi ed service technician.
TROUBLESHOOTING