Rinnai DONSR07B1 Operation Manual page 17

SYMPTOM
The air conditioner does not
generate cool / hot air.
Poor heating performance.
It is not possible to adjust the fan
speed.
It is not possible to adjust the
temperature.
Rinnai
CAUSE
Air is not circulating properly. Make sure that there are no curtains,
blinds or furniture blocking the front of the air conditioner.
The air filter is dirty. Clean the air filter once every 2 weeks. See
"Cleaning Air Filter" for more information.
The room temperature is too high. In summer, it may take some time
to cool indoor air. In this case, select the turbo cool operation to cool
indoor air quickly.
The desired temperature is higher than the set temperature. Set the
desired temperature to a level lower than the current temperature.
There is a heating source nearby. Avoid using a heat generator such as
an electric oven or a gas burner while the air conditioner is in operation
The FAN ONLY mode of operation is selected. In this mode, air blows
from the air conditioner without cooling or heating the indoor air. Switch
the operation mode to the cooling, heating or auto.
The air inlet or outlet of either unit is blocked. Turn the unit off, remove
the obstruction and turn it back on.
Doors and windows are open. Make sure that all doors and windows
are closed while operating the unit.
Excessive heat is generated by sunlight. Close windows and curtains
during periods of high heat or bright sunshine.
Too many sources of heat in the room (people, computers, and
electronics etc). Where possible reduce the amount of heat sources.
Low refrigerant due to a leak or after long-term use, contact Rinnai.
The outdoor temperature is lower than 7°C. Use an auxiliary heating
device.
Doors and windows are open. Make sure that all doors and windows
are closed while operating the unit.
In some operation modes, you cannot adjust the fan speed. Select an
operation mode in which you can adjust the fan speed.
In some operation modes, such as the auto or fan only modes, you can
not adjust the temperature. Select an operation mode in which you can
adjust the temperature.
17
CARE & MAINTENANCE
DRCi AC_OM