d2itsu APD-12A Manual de servicio - Página 8

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Air filter

Air discharge pipe

Unit undersized

Condenser and Evaporator

Water shower failure

Fan motor

Cooling or heating

Air flow

feels not good

Less refrigerant

Capillary tube

Compressor

Heat sources

No power

Wiring

Temperature setting

Mode setting

No cooling or

Compressor

heating.

Electric heater failure

Over heat fuse failure

Main PCB

Power supply

The unit starts and

Main PCB

stops frequently.

Room temperature

Clean or replace if restricted.

Realign and assemble if the installation of the air discharging

pipe failure. Replace if damaged.

Determine if the unit is properly sized for the area to be cooled or

heated.

Clean or replace if restricted.

Check the structure of water showering system and clean if

blocked.

Check the fan capacitor and replace if not within +/-10% of

manufactures rating.

Clean or remove if any barrier is found to block the inlet/outlet

wind flow of the unit.

Check the tubes for reasons of leakage. Recycle the refrigerant,

correct the leakage points and recharge.

Regulate the flow if capillary tube and make the evaporating

temperature appropriate if the evaporator is frosted. Replace if

blocked. Repair joint if leaking.

The inlet and outlet valve of the compressor is damaged, making

the low pressure connected with the high pressure. The

refrigerating system can not produce high pressure and low

pressure. Replace the compressor after checking for the reason.

Reduce if too many.

Check the voltage. Call an electrician if no within the limit.

Check the terminals. Repair and correct if loose.

Check and adjust the temperature setting.

Check and adjust the mode setting.

Check and replace if the compressor, the over-load protector or

wiring is broken.

Check and replace if the heater is damaged.

Check and replace if the fuse is damaged.

Check the voltage of main PCB. Replace the main PCB when the

unit failure in heating mode.

The input power supply voltage is too low. Call an electrician if

not within limits.

Check and replace the main PCB if the compressor relay on PCB

is shorted or damaged.

When the room temperature is too high, the compressor will

protect.