Rheem TRITON GHE80SS Service Training Manual page 41

TROUBLESHOOTING ERROR CODES
Error A028 Flame Present W/O Heating
This alarm means the control board detected a flame signal 10 seconds after the gas valve had closed from the last heating cycle.
• Check for flame through the sight glass. If flame is present
with this code, either the gas valve needs to be replaced
or gas pressure to unit is above maximum stated on rating
label.
• Make sure the heater has a solid earth ground at the elec-
trical connection box on top of the unit; and the electrical
connection to the power supply has a solid earth ground.
IF GHE119
• Check relays with unit in standby to confirm continuity is
not present, relays are normally open. If present replace
relay.
Error T029 Failed Ignition
The unit will fail nine times and give an A029. It will fail 9 more
times and give an A029. On the 27
with an A001 code.
• Refer to Error A001 for troubleshooting. (See Page 33)
Error A030 Flame Lost During Heating
This code means the unit lost flame signal during heating. The
unit will attempt to heat 3 times in 3 consecutive cycles. After the
3rd try, the unit will lock out with a code A002.
• Refer to Error Code A002 for troubleshooting.
Error A031 Loss of Anode Communication
This error code means there is a loss of Anode communication. This will not disable the water heater or keep it from heating.
• Check the connections between anode control and ignition
control.
• Check the harness for proper connections.
failure, the unit will lock out
th
41
• Remove and clean the igniter and flame rod then reinstall.
Allow the unit to go through a heating cycle to see if the
error occurs again. If error occurs and no flame is visible
through the sight glass, replace the flame rod.
If flame rod is replaced and error continues, replace the ignition
control board.
• If not found replace both relays and confirm unit operates
normally.
• If error code is still present, replace the anode control
• If error is still present after replacement, replace the ignition
control board.
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