SAVE A SERVICE CALL
14
TEMPERATURE PRESSURE RELIEF VALVE RUNNING
Normal Operation
It is normal and desirable this valve allows a small quantity of
water to escape during the heating cycle. However, if it discharges
more than a bucket full of water in 24 hours, there may be another
problem.
Continuous dribble
Try gently raising the easing lever on the relief valve for a few
seconds (refer to “Temperature Pressure Relief Valve” on page 8).
This may dislodge a small particle of foreign matter and clear the
fault. Release the lever gently.
Steady flows for long periods (often at night)
This may indicate the mains water pressure sometimes rises
above the designed pressure of the water heater. Ask your
installing plumber to fit a pressure limiting valve.
Warning: Never replace the relief valve with one of a higher pressure rating.
Heavy flows of hot water until the water heater is cold - then stops until water reheats
The water heater must be switched off at the isolating switch or switchboard. Phone your nearest
Rheem Service Department or Accredited Service Agent to arrange for an inspection.
HIGH ELECTRICITY BILLS
With the installation of your new air sourced heat pump water heater, maximum electrical energy savings can
be achieved. Should you at any time, feel your electricity account is too high, we suggest you check the
following points:
Is the water heater operating in booster mode with the red LED flashing?
If there is a fault with the heat pump system, the water heater will default to backup heating mode to
ensure a supply of hot water. Check to see if the red LED is flashing as this will indicate there may be a
fault with the system.
Refer to “Water Too Hot” on page 13 and to “Heat Pump Is Not
Operating” on page 13.
Is the relief valve running excessively?
Refer to “Temperature Pressure Relief Valve Running” on
page 14.
Is one outlet (especially the shower) using more hot water than
you think?
Refer to “Not Enough Hot Water” on page 12.
Is there a leaking hot water pipe, dripping hot water tap, etc?
Even a small leak will waste a surprising quantity of hot water and energy. Replace faulty tap washers,
and have your plumber rectify any leaking pipe work.
Consider recent changes to your hot water usage pattern and check if there has been any increase in
tariffs since your previous account.
The heat pump water heater operates at its most efficient at higher air temperatures. Prolonged periods
where the temperature is below 3°C to 5 C will decrease the efficiency of the system and increase
running costs.
IF YOU HAVE CHECKED ALL THE FOREGOING AND STILL BELIEVE YOU NEED ASSISTANCE, CALL
YOUR NEAREST RHEEM SERVICE DEPARTMENT OR ACCREDITED SERVICE AGENT.
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