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GOING ON HOLIDAYS:
If you plan to be away from home for one or two nights, we suggest that you leave the water heater
switched on. However, if you plan to stay away more than a few nights, you can conserve energy by
switching the water heater off at the isolating switch, or at the main switchboard. In locations where
freezing could occur, you should leave the water heater turned on.
Where alternative energy sources are in use, consult the user manual for the energy source for
instructions to switch off the system when going on vacation.
SAVE A SERVICE CALL
Check the items below before making a service call. You may be charged for service if the fault
is not related to the water heater manufacture or parts supplied with the water heater by
Rheem.
WATER DISCHARGING FROM CONTROL VALVES
It is normal for the cold water expansion valve to discharge a small quantity of cold water during the
heating cycle. If a cold water expansion valve is not fitted, then the Temperature and Pressure Relief
(TPR) valve may discharge a small quantity of hot water. If either of these valves discharges more than
a bucket full of water in 24 hours, one of the following may be the cause.
Continuous dribble from valve, vent or drain line
Try gently raising the easing lever on the TPR valve for a few seconds. This may dislodge small
particles of foreign matter and clear the fault.
Heavy flow of hot water discharging from valve, vent or drain line
Immediately turn off the electricity supply to the water heater. Call Rheem Service or your local
plumber to arrange an inspection.
A steady flow of water (often at night) from vent or drain line.
This may indicate that your cold water pressure sometimes rises above the design pressure of
your water heating system. A Pressure Limiting valve should be installed, or if one is installed, it
may need replacing.
NOT ENOUGH HOT WATER (or no hot water)
Is the electricity turned on?
Check the switch marked ‘water heater’ at the switchboard and the water heater isolating switch.
Check the fuse or circuit breaker marked ‘water heater’.
Where the water heater is connected to an off peak (night rate) electrical tariff, the supply may not
be available at certain times of the day.
Do you have the correct size heater for your requirements?
Refer to the sizing guide in the Rheem sales literature or the Rheem website.
Is one outlet (especially the shower) using more hot water than you think?
Carefully review the family’s hot water usage and if necessary check the shower flow rate.
For optimum hot water usage we recommend the shower flow rate is between 8 to 10 litres per
minute. This can be achieved by either a flow restrictor or a flow control valve.
Ensure the thermostat setting is appropriate. Note some models require an authorised person
to make thermostat adjustments.
HIGH ELECTRICITY BILLS
Is one outlet (especially the shower) using more hot water than you think? (see above)
Is there a leaking hot water pipe, dripping hot water tap, etc?
Even a small leak will waste a surprisingly large quantity of hot water and energy. Service dripping
taps, and have your plumber rectify any leaking pipe-work.
Are either of the expansion valves discharging too much water? (see above)
Consider recent changes to your hot water usage pattern and check if there has been an
increase in energy tariffs since your previous account.
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