Troubleshooting - Rinnai Pro Series Operation Manual

Troubleshooting

Check the following information before making a service call as some performance characteristics
are a normal part of operation. If you are still unsure or concerned after reading this section, please
contact Rinnai on 0800 746 624.
Issue
Unit does not turn on
when pressing the On/Off
button
Unit changes from cool/
heat mode to fan mode
Outdoor unit emits steam
Indoor unit makes noises
Outdoor unit makes
noises
Unusual smell
Outdoor unit fan does not
operate
Poor heating performance At low external temperatures (below 5 °C) the heating capacity will start to
Unable to adjust fan
speed
Unable to adjust the
temperature
System stops running
System does not generate
cool / hot air
12 |
Possible causes
The unit has a three minute protection feature that prevents the unit from
overloading. The unit cannot be restarted within three minutes of being turned
off.
The unit may change its setting to prevent frost from forming on the unit.
Once the temperature increases, the unit will start operating in the previously
selected mode again.
The set temperature has been reached, at which point the unit turns off the
compressor. The unit will resume operation when the temperature fluctuates
again.
When the unit restarts in 'heat' mode after defrosting, steam may be emitted
due to moisture generated from the defrosting process.
Water flowing noise. This is the sound of the refrigerant flowing inside the unit,
this is normal.
The unit will make different sounds based on its operating mode. This is
normal.
The unit may absorb odours from the environment, such as paint, cooking,
cigarettes, etc., which will be emitted during operation and cleaning.
During operation the fan speed is controlled to optimise operation.
diminish. Is the unit appropriately sized for the location of the home.
In some operation modes the fan speed can't be adjusted. Select an operation
mode where the fan can be adjusted.
In some operation modes, such as auto or fan only modes, the temperature
can't be adjusted. Select an operation mode where the temperature can be
adjusted.
Check the power supply. If a power failure has occurred, turn the system off.
When the power is restored wait three minutes and then turn the system back
on.
Timer is activated, turn the timer off.
Circuit breaker tripped or fuse has blown. Contact installer or Rinnai.
Air is not circulating properly. The air inlet or outlet of either unit is blocked.
Turn off the unit, remove the obstruction and turn it back on.
The room temperature is too high. In summer it may take some time to cool
the indoor air. Select turbo cool operation to cool the indoor air quickly.
Too many sources of heat in the room (people, computers, electronics etc).
Where possible reduce the amount of heat sources.
Excessive heat is generated by sunlight. Close windows and curtains during
periods of high heat or bright sunshine.
The FAN only mode is selected. In this mode, air blows from the system
without cooling or heating. Switch the operation to cooling, heating, or auto.
Low refrigerant due to a leak or after long-term use, contact Rinnai.