Operating instructions

SAVE A SERVICE CALL

Check the items below before making a service call. You will be charged for attending to any condition or

fault, which is not related to manufacture or failure of a part (refer to “Terms of the Rheem Warranty” on

page 71).

NO DISPLAY ON THE CONTROLLER

• Is the controller turned on?

Press the on / off button (refer to “Temperature Control” on pages 11 to 30).

• Is the water heater plugged in and the power outlet switched on?

• Is power available in the house?

Try using another electrical appliance.

COLD WATER FROM THE HOT TAP

• Is the controller turned on?

Press the on / off button (refer to “Temperature Control” on pages 11 to 30).

• Close the hot tap, wait 10 seconds and open the hot tap again.

• Is the hot tap open enough?

The burners will not light if the flow rate is less than 2.0 L / min.

• Is the water heater plugged in and the power outlet switched on?

• Is power available in the house?

Try using another electrical appliance.

• Is the isolation valve in the gas line open?

• Is there a gas supply to the rest of the house?

Try lighting another gas appliance.

• Has the gas line been purged of air after installation?

Refer to your plumber.

WATER IS TOO HOT OR NOT HOT ENOUGH

• Does the controller you are using have priority? (refer to “Temperature Control” on pages 11 to 30)

Note: For an 886 series water heater, 50°C is the maximum available temperature setting.

WATER FLOW FLUCTUATES

More than two or three taps in use at the same time may cause a decrease in the hot water flow from the

taps. This can also be evident if the water heater has been installed as an in-series gas booster to a solar

water heater and the solar heated water is at a low temperature.

• Are there more than two or three taps open, or are appliances such as a dishwasher or washing

machine, in use at the same time?

Ensure only two or three taps or appliances are on at the one time.

• Check the flow of the water from one tap, e.g., the shower.

The shower should be adjusted so the hot tap is fully open.