Rheem RTGH-RH10DV, Use And Care Manual, Page: 67 / 86

AP18733 REV. 3.2.17
67
Figure 48 – Resetting the Recirculation Run Time
d. The Recirculation Run Time has now been reset to the factory default settings. Press to return to Standby Mode.
NOTICE
If hot water is not used for more than thirty (30) hours, the recirculation program will be stopped and the water heater will automatically go into
Vacation Mode and display the vacation icon .
▪ J. ERROR MODE
When the water heater encounters an error, the display will flash “Er” followed by a numerical code. The water heater shall enter a soft lockout con -
dition if the error is such that it can return to normal operation once the condition relieves itself (overheat conditions, NTC open or shorts, etc.).
The water heater shall enter a hard lockout if the condition indicates something more serious (flame, ignition, condensate line, etc.) To clear a hard
lockout Error Code, press the Power button. The following screen will display when the water heater encounters an error.
Figure 49 – Error Mode Screen
Error Code Error Code Description Possible Remedies
Er:10
Flame has been lost Eight (8)
Times
Press the Power button to clear the Error Code.
If Error happens again:
1. Monitor the gas pressure to the water heater while in operation. Ensure pressure is be -
tween 5.0" W.C and 13.0" W.C (1.25 to 3.24 kPa).
2. Check gas valve wire. Ensure connection is secure.
3. Check flame detection sensor. Ensure connections are secure. Normal operating settings
are more than 2.5DC before ignition, less than 2.5DC after ignition.
4. Check igniter transformer for proper connection.
5. Clean the spark igniter with steel wool to remove oxides. Ensure proper separation (3-4
mm).
6. Replace the spark igniter if damaged.
7. Assure that the flame is stable when lit.
8. If the problem persists, replace the main control.
Er:11
Ignition has Failed 10 (Ten)
Times
Press the Power button to clear the Error Code.
If Error happens again:
1. Monitor the gas pressure to the water heater while in operation. Ensure pressure is between
5.0"
W.C and 13.0" W.C (1.25 to 3.24 kPa).
2. Check gas valve wire. Ensure connection is secure.
3. Check flame detection sensor. Ensure connections are secure. Normal operating settings are more
than 2.5DC before ignition, less than 2.5DC after ignition.
4. Check igniter transformer for proper connection.
5. Clean the spark igniter with steel wool to remove oxides. Ensure proper separation (3-4 mm).
6. Replace the spark igniter if damaged.
7. Assure that the flame is stable when lit.
8. If the problem persists, replace the main control.