Rinnai Australia 6 Operation & Installation Manual
SERVICING & REPAIR
Rinnai’s servicing network personnel are fully trained and equipped to give the best service on your Rinnai
appliance. If your appliance needs service, ring one of the service contact numbers on the back of this booklet.
The pressure and temperature relief valve and expansion control valve (if fitted) must be replaced by an authorised
person at intervals not exceeding 5 years or more frequently in areas where the water is classified as scaling water.
If the power supply cord or plug to the heat pump unit is damaged, they must be replaced by an authorised person
in order to avoid a hazard. The power supply cord and plug must be replaced by a genuine replacement part
available from Rinnai.
TROUBLE SHOOTING GUIDE
Use the following trouble shooting guide to avoid the need for an unnecessary service call.
Insufficient or No Hot Water
Problem Remedy
Heat Pump Unit • Ensure the heat pump is plugged into the power point and turned
on.(note that the compressor will not start up for 3 minutes after
power is turned on).
• Check to ensure the electric isolating switch at the switchboard
(usually marked “Hot water or water heater” is turned on.
• Check to ensure the electric fuses for the heat pump are intact.
Excessive hot water consumption • Often end users are surprised at the amount of hot water used,
especially when showering. If the amount of hot water used
during the day exceeds the storage capacity of the cylinder, it is
likely there will be insufficient hot water.
Pressure & Temperature Relief (P&TR)
Valve continually discharging water
• It is normal and desirable that this valve allows a small quantity
of water to be discharged during the heating cycle. If it
discharges more than a bucket of water during a 24 hour period
or discharges continuously there may be another problem.
• If the valve dribbles continuously, try easing the valve gear for a
few seconds as described in “EXCESSIVE DISCHARGE FROM
SAFETY DEVICES” on page 4. This may dislodge any foreign
matter and alleviate the problem.
• If the valve discharges at high flows, especially at night, it may
be as a result of the water pressure exceeding the design
pressure of the water heater. Ask your installer to fit a Pressure
Limiting Valve (PLV).
Expansion Control Valve (ECV) continually
discharging water
• It is normal and desirable that this valve allows a small quantity
of water to be discharged during the heating cycle. If it
discharges more than a bucket of water during a 24 hour period
or discharges continuously there may be another problem.
• If the valve leaks continuously, try easing the valve gear for a few
seconds as described in “EXCESSIVE DISCHARGE FROM
SAFETY DEVICES” on page 4. This may dislodge any foreign
matter and alleviate the problem. If this does not alleviate the
problem contact Rinnai.
Ambient conditions too hot • To protect the components of the heat pump unit it may not
operate when the ambient temperature is higher than 45°C.
Air inlet or outlet of heat pump blocked • To protect the components of the heat pump unit, it will not
operate is there is insufficient air flow through the unit. Remove
any obstructions from the air inlet and outlet.
