Rheem GHE80SU Use & Care Manual page 48

Before You Call For Service...
Alarm ('A')
and Alert
('T') Codes
Periodic maintenance, inspection, and upkeep on the
T117
unit.
Periodic maintenance, inspection, and upkeep on the
T118
unit.
Periodic maintenance, inspection, and upkeep on the
T119
unit.
Periodic maintenance, inspection, and upkeep on the
T120
unit.
One or more powered anodes do not sense water in
the tank. This can also be caused by an "open" circuit
A121
on an anode. Check anode wiring. Ensure tank is com-
pletely full. This will disable the heater.
No communication with the powered anode controller
T122 for >60 seconds. If the green LED on top of the anode
control is solid, the anodes are still protecting the tank.
Anode "open" circuit. This can be caused by wiring
T123
damage, wiring disconnected, or anode damage.
Anode control common and the power connection for
T124
this anode cross connected.
Anode "short" circuited. This can be caused by wiring
T125 damage, anode damage, or the anode in contact with
the tank.
Anode power = 100%. The anode system has reached
T126
its protective limits on one or more anode elements.
Anode power > 70%. The anode system is approaching
T127
its protective limits on one or more anode elements.
Anode "open" circuit. This can be caused by wiring
T128
damage, wiring disconnected, or anode damage.
Anode control common and the power connection for
T129
this anode cross connected.
Description
48
Current Alarm Screen Display
T117 Time to Drain and Inspect Tank
->Refer to the use and care manual for instructions,
or contact technical support or service provider.
T118 Time to Check Venting for Debris
->Refer to the use and care manual for information,
or contact technical support or service provider.
T119 Time to Clean Out the Condensate Drain Trap
->Refer to the use and care manual for instructions
and locations. Call technical support or service provider
if necessary.
T120 Time to Replace the Neutralizer
->Clear error code by pressing clear button. Refer
to use and care manual for troubleshooting, or contact
technical support.
A121 No Water Detected in Tank
->Fill the tank with water. If error persists, please
contact technical support or service provider.
T122 Powered Anode Control Comm Failure
->Check wiring connections of the anode control
board. If error persists, please contact technical support
or service provider.
T123 Upper Anode Open
->Check wiring connections for the upper anode.
If error persists, please contact technical support or
service provider.
T124 Upper Anode Mounting Error
->Check wiring connections for the upper anode.
If error persists, please contact technical support or
service provider.
T125 Upper Anode Shorted
->Check wiring connections for the upper anode.
If error persists, please contact technical support or
service provider.
T126 Upper Anode Overload
->Upper Anode has reached full capacity. Tank may
not be fully protected. Please contact technical support
or service provider.
T127 Upper Anode Pre-Overload
->Upper Anode near end of useful life but will con-
tinue protecting tank. Please contact technical support.
T128 Middle Anode Open
->Check wiring connections for the middle anode.
If error persists, please contact technical support or
service provider.
T129 Middle Anode Mounting Error
->Check wiring connections for the middle anode.
If error persists, please contact technical support or
service provider.