Specifications

23
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 Aquamax Warranty” on
page 59).
NO DISPLAY ON THE CONTROLLER
Is the controller turned on?
Press the on / off button (refer to “Temperature Control” on pages 11 to 21).
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 21).
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 2.5 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 21)
Note: For a CG20-50 model water heater, 48°C is the maximum available temperature.
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 37) is fully
open.
WATER FLOW FLUCTUATES
More than one or two hot 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 one or two hot taps open, or are appliances such as a dishwasher or washing
machine, in use at the same time?
Ensure only one or two hot taps (or appliance) 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.