Save A Service Call - Rinnai Enduro XL SP250B Operation & Installation Manual

Before contacting Rinnai for service, please follow the fault finding guide. If the problem persists or this information
doesn't answer your questions, contact Rinnai on the phone number on the back of this manual
Service call outs attending to any condition or fault that is not related to Rinnai product or components may be
chargeable.
INSUFFICIENT OR NO HOT WATER
Excessive hot water
consumption
Incorrect solar system size
Temperature and pressure
relief valve / expansion
control valve discharging
water continuously
Gas booster not operating
orinsufficientgassupply
for gas boosted heating
system
NO WATER FROM THE HOT TAP
Restriction in the hot tap
or failure of the cold water
supply to the heater
HIGH GAS BILL
Temperature and pressure
relief valve / expansion
control valve discharging
water continuously
Lack of solar gain
CONDENSATION IN COLLECTORS
Condensation in solar
collectors
NOISY SOLAR COLLECTORS
Noise from solar collectors
WATER HAMMER
Hot and cold water
plumbing in the premises
WATER COMING FROM COLLECTORS
Frost Valve(s) Operating
Rinnai
Insufficient flow may occur if multiple outlets are in use at the same time and exceed the
rated flow capacity of the gas booster. If so, reduce the number of outlets in use.
Consider discussing with your installer, fitting water saving fixtures and/or flow control or
pressure limiting valves to reduce consumption.
The system may not have been adequately sized to suit the household.
PTR Valves & ECV Valves (if fitted)
It is normal and desirable that these valves allows a small quantity of water to be discharged
during the heating cycle. If they discharges more than a standard bucket of water during a 24
hour period or discharges continuously there may be another problem
If water continuously dribbles from the valve, try easing the valve gear for a few seconds as
described in the section 'Maintenance and Regular Care' on page 8. This may dislodge
any foreign matter and alleviate the problem.
If the valve discharges at high flows, contact your installer or Rinnai to discuss.
Check to ensure the power cord of the gas booster is plugged in and switched 'on'.
Check gas is available and the isolation valve is opened
Close the hot tap and wait for 10 seconds and open it again. The hot tap must be opened
enough to ensure that the flow rate is sufficient for the gas booster to light.
Check if there is gas supply to other appliances in the rest of the house
Check for water flow at the other hot taps and that the cold water isolation valve is fully open
See entry under 'Insufficient or No Hot Water'
Reduced sunlight due to overcast weather in summer or low solar contribution in winter will
result in an increased dependence on electricity or gas boosting. Higher electricity or gas
bills under these conditions, especially in winter, are normal.
If the solar collectors are shaded by trees or other objects, or the glass is dirty, the
effectiveness of the collectors is greatly reduced. Arrange for trimming of the trees or
relocation of the solar collectors if the obstruction is permanent. Arrange for cleaning of the
collector glass
Solar collectors incorrectly positioned will also severely affect the solar gain. Check that
positioning and alignment of solar collectors is in accordance with the section 'System
Orientation and Inclination' on page 16.
There is a small amount of ventilation between atmosphere and the internals of the solar
collector to ensure efficient operation. Under certain weather conditions, water vapour
naturally present in the air may condense on the inside surface of the collector glass. This
does not affect the performance of the system. If you are concerned contact Rinnai to
discuss.
Occasionally on days of high solar gain, the water temperature in the collector may become
very high. The noise may be similar to a boiling kettle, or an expanding contracting metallic
sound. The collector is designed to withstand these conditions, and no action is needed,
unless it is extreme. Contact Rinnai to discuss if you have any concerns.
Contact your installer or a plumber to discuss checking the clipping of hot and cold water
pipe work and install a pressure limiting valve or water hammer arrestor as required
In conditions where the water in the solar collector could freeze and damage the collector,
the frost valve(s) will release a small quantity of water to prevent the build up of pressure.
9

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Low Profile Roof Mounted OIM