Changing The Maximum Temperature Setting To 140; Changing The Maximum Temperature Setting To 120 - Rheem RTG2-42 Troubleshooting Manual

DIP Switch. The LED on the PCB and the display of the remote control stops
illuminating.
13. Attach the unit's front cover.
14. Turn on the gas shutoff valve and water shutoff valve.
15. Check and ensure safe operation and performance of the water heater.

Changing the Maximum Temperature Setting to 140

By installing the UMC- Main Remote Control, you can adjust the maximum temperature
setting to 140 degrees F. Water temperature settings of 130°F and 140°F can be achieved only
when using MAIN remote control. The water
temperature is set at 100°F from the factory.
To adjust the unit to create water temperatures
from 130 or 140 degrees, you must perform a
DIP Switch adjust as follows:
1. Turn off remote control. Leave the unit
plugged into a 120 VAC power source.
2. Turn off the gas and water shutoff
valves.
3. Remove the front cover.
4. Find the DIP Switch #4 located at the top
left hand side of the PCB.
5. Change the DIP Switch #4 setting to the
"ON" position. DO NOT alter any other
DIP Switch.
6. The LED on the PCB is flashing. At the same time, the display of the Main Remote
Control starts to flash.
7. Press the "SW2" Button on the left hand side of the PCB for more than 1 second.
8. The LED on the PCB starts illuminating continuously. At the same time, the display of
the Main Remote Control is on continuously.
9. Change the DIP Switch #4 setting back to the "OFF" position. DO NOT alter any other
DIP Switch.
10. The LED on the PCB will stop illuminating. At the same time, the display of the Main
Remote Control will turn off.
11. Attach the unit's front cover.
12. Turn on the remote control, gas and water shutoff valves.
13. Check and ensure safe operation and performance of the water heater.

Changing the Maximum Temperature Setting to 120

Follow the instruction below if it is determined that a setting of 130°F or 140°F is no longer
required and you want to return to a maximum water temperature of 120°.
SVC 810 Tankless Troubleshooting Manual
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