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46
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 4).
NO DISPLAY ON THE CONTROLLER
Is the controller turned on?
Press the on / off ( ) button (refer to
“Temperature Control” on pages 15 to 44).
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 15 to 44).
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 a plumber.
WATER IS TOO HOT OR NOT HOT ENOUGH
Does the controller you are using have priority? (refer to
“Temperature Control” on pages 15 to 44)
Note: For an 876 series water heater, 50°C is the maximum available temperature setting.
REDUCED HOT WATER FLOW WHEN HEAT EXCHANGER IS COLD
At a cold start-up, i.e. when the water heater has not operated for some time (which is most often first thing in
the morning), the initial flow of hot water may be reduced for a period of 5-10 seconds while the heat exchanger
warms up. This is both an energy and water saving feature of this water heater. Once the heat exchanger
has warmed up the hot water flow will increase and remain at normal flow levels. This feature will only occur
at a cold start-up and not when the heat exchanger is already warm from a recent use of hot water.
NO WATER FROM THE HOT TAP
No flow of water from the hot tap may indicate a restriction in or failure of the cold water supply to the water
heater. Check for water flow at other taps and that the cold water isolation valve (refer to page 63) is fully open.
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