Rheem AP16697, Use & Care Manual, Page: 19 / 28

19
CODE SCROLLING MESSAGE
DESCRIPTION/ACTION
A100 Lower temperature thermistor
failure
Electronic control has detected lower temperature sensor is bad. The problem
could be the sensor, wiring, or the control board. Please call for service.
A101 Upper temperature thermistor
failure
Electronic control has detected upper temperature sensor is bad. The problem
could be the sensor, wiring, or the control board. Please call for service.
A102 Water sensor alarm Electronic control has detected water in the drain pan. Check the pan for
water. If there is no water present, disconnect the sensor, dry and reinstall it to
reset the error.
A103 Fill tank with water Electronic control has detected no water in the tank. Please fill the tank with
water and recycle power.
A104 Emergency cut off alarm Electronic control has detected high temperature electrical cut-out device
(ECO) has been activated. Reset ECO or call for service
A105 Lower element error Electronic control has detected an error with the lower element or associated
wiring and connections. Please call for service.
A106 Upper element error Electronic control has detected an error with the upper element or associated
wiring and connections. Please call for service.
A107 Element wire routing error Call for service
A108 Lower element relay stuck on
error
If this error is displayed, the control board will have to be replaced. Please
call customer service.
A109 Upper element relay stuck on
error
If this error is displayed, the control board will have to be replaced. Please
call customer service.
A110 Lower temperature conversion
error
If this error is displayed, the control board will have to be replaced. Please
call customer service.
A111 Upper temperature conversion
error
If this error is displayed, the control board will have to be replaced. Please
call customer service.
A500 Control Failure If this error is displayed, the control board will have to be replaced. Please
call customer service.
Error Codes for Electronic Control
ERROR CODES
CAUTION: For your safety DO NOT attempt repair of electrical wiring, temperature sensor, electronic
control, heating elements or other safety devices. Refer repairs to qualified service personnel.
!