Rheem Maximus Manual page 46

BEFORE YOU CALL FOR SERVICE...
Alarm ('A')
and Alert
('T') Codes
Presence of water detected by the leak sensor in the
bottom pan. If water is seen locate source and take
A104
appropriate action to correct the issue. This may
disable the heater based on configuration settings.
Check to see if leak sensor is installed in the bottom
T105 pan. Check wiring on connector P11 of the ignition
control board.
Communication lost between the display board and the
ignition control board. The ignition control board will
A108 continue to operate the heater using the last known
configuration settings. Check wiring between the
display and P5 of the ignition control board.
Monthly test of automatic shutoff valve (premium
A110 models only) was not completed properly. The valve
did not close in the allotted time.
Monthly test of automatic shutoff valve (premium
models only) was not completed properly. The valve
A111
did not open in the allotted time. This will disable the
heater.
Automatic shutoff valve (premium models only) is
A112
closed. This will disable the heater.
Peak flame rod current has deviated from the startup
average. This is indicative of degradation of the flame
T113
rod (dirty, sooty). It needs to be cleaned and inspected
.
Peak flame rod current has deviated from the startup
T114 average by a significant amount. Clean and inspect
flame rod. Replace if necessary.
Monitored characteristics of the combustion system
T115 indicate degraded performance. Combustion system
needs to be inspected and serviced.
Monitored characteristics of the combustion system
T116 indicate severely degraded performance. Combustion
system needs to be inspected and serviced.
46
Description Current Alarm Screen Display
A104 Water Leak Detected
->The presence of water has been detected by the
control. Please contact a qualified service provider.
T105 Water Leak Sensor Not Installed
->Check water leak sensor connection. Refer to
use and care manual for troubleshooting, or contact
technical support.
A108 Ignition Board Communication Failure
->Communications lost with ignition control board.
If problem persists, contact technical support or
service provider.
A110 Shutoff Valve Test Close Error
->Auto Shutoff valve failed to close during test
cycle. Please contact technical support or service
provider.
A111 Shutoff Valve Test Open Error
->Water heater has been disabled. Manually open
valve. Contact technical support or service provider.
A112 Shutoff Valve Not Open: Heating Disabled
->Manually open valve if no water detected or if
unit is not being serviced. Contact technical support or
service provider.
T113 Flame Rod Degraded and Needs Servicing
->Clean or replace per use and care manual.
Please contact technical support for assistance.
T114 Flame Rod Degraded and Needs Servicing
->Clean or replace per use and care manual.
Contact technical support for assistance.
T115 Combustion Health Degraded: Needs Service
->Combustion system performance is degraded.
Contact technical support or service provider for
assistance.
T116 Combustion Health Degraded. Needs Service
->Clear error code by pressing clear button. Refer
to use and care manual for troubleshooting, or contact
technical support.