Single Zone Service Manual - General

Part 4 Trouble Shooting
- 26 -
Problem Possible causes Corrective action Error Code
The air conditioner
does not generate
cool air.
• Air is not circulatingprop-
erly.
• Make sure that there are no curtains, blinds or fur-
niture 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 jet cool operation to cool
indoor air quickly.
01, 05, 09
• Cold air is escaping from
the room.
• Make sure that no cold air is escaping through
ventilation points in the room.
• The desired temperature
is higher than the set
temperature.
• Set the desired temperature to a level lower than
the current temperature.
01
• 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.
• Air circulation operation
is selected.
• In the air circulation operation, air blows from the air
conditioner without cooling or heating the indoor air.
• Switch the operation mode to the cooling operation.
• Outside temperature is
too high.
• The cooling effect may not be sufficient.
01, 26, 32,
61, 62
The air conditioner
does not generate
warm air.
• When the heating mode
is started.
• Vane is almost closed
and air flow does not
come out.
• Even though outdoor
unit is already begun to
operate.
• This symptom is normal.
• Please wait until the unit is preparing warm air.
• This function prepare to blow warm air.
• Defrosting mode is being
done in the outdoor unit.
• In heating mode, ice/frost is built up on the coils
when the outside temperature fall down.
• This function remove a layer of frost on the coil.
• Please wait until this operation is completed. It
takes about 15 mins.
• Outside temperature is
too low.
• The heating effect may not be sufficient.
01, 26, 32,
61, 62
The air-conditioner
stops during oper-
ation.
• The air conditioner is
suddenly turn off.
• The timer function could be operated. If the timer
function would operate, the air-conditioner can be
turn off.
• Check the timer setting is correct.
41, 44, 45,
65
• A power failure has
occurred during opera-
tion.
• There is the Auto Restart Function. It is a default
setting.
• This function can turn on the unit automatically
when the power is restored.
• If you live in frequent power failure area, this
function would be useful.
41, 44, 45,
65