Water Filter - Rinnai RH180 Operation And Installation Manual

Water Filter Inspection, Detection & Cleaning
A. Inspection:

To maintain optimum performance, periodically inspect the water filter.

To clean the water filter follow the cleaning procedure described in Step C.

If the water filter appears damaged, contact a qualified service provider for a replacement filter (Part No.
107000032)
B. Detection:........(Controller Flashing 07 or 63)

Flashing 07 is an indication that the water filter is dirty or restricting water flow thru the water heater.
Although the water heater will continue to operate the cleaning procedure described in Step C should be
performed as soon as possible.

Flashing 63 is an indication that the water filter is blocked and the appliance can no longer continue to
heat water. Follow the cleaning procedure described in Step C.

If the controller continues to flash the error code after cleaning the water filter, turn off the unit and
contact a qualified service provider as this may indicate a pump error.
C. Cleaning:
1. Power OFF the water heater

Push the round power button located on the right hand side of the controller.

Display will go blank when the power is off.
2. Remove the lower enclosure.

Remove the screws around the perimeter of the pump enclosure

Remove the enclosure by first pulling away the bottom portion.
3. Drain and Relieve pressure from the system

Close the cold water supply valve on the water heater

Open any hot water fixture and leave open to allow draining

Attach one end of a hose to the drain valve and position the other end of the hose at a near by drain.
4. Remove the filter by turning the thumb screw in a counterclockwise motion.
6. Clean the filter and remove any debris that may reduce water flow.
7. Replace the filter. Turn the thumb screw in clockwise direction until finger tight.
8. Close the drain valve and open the cold water supply valve leaving the hot water fixture open until all air
is out of the system
9. Power ON the water heater and set to desired temperature.
10. Close the hot water fixture when finished.
38 RH180 Manual