42
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 83).
NO DISPLAY ON THE CONTROLLER
Is the controller turned on?
Press the on / off ( ) button (refer to Temperature Control on pages 11 to 40).
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 40).
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 40)
Note: For an 876 series water heater, 50°C is the maximum available temperature setting.
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 57) is fully
open.
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.
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