Troubleshooting – Campomatic AC50MF User Manual

Page 9

Before calling for service, please review the following list of common problems and solutions.

The temperature setting is too high
or too low.

Air conditioner
does not
cool or
heat well

Air conditioner
does not
cool or
heat at all

The air filter is clogged with dust

Doors or windows are open

The air inlet or outlet of the outdoor
unit is blocked

Clear up the block first, then begin to
operate.

Close the doors or windows

Clear up the block

Clean the filter

Set a more comfortable temperature.

Wait or cancel timer setting

Change the batteries.

Solutions

Possible Cause

Problem

Air conditioner
does not
operate at all

The timer is set.

The batteries of the remote control are exhausted

Power failure
The power supply is disconnected.

The power fuse is blown.

Three-minute protection feature

Unappropriated temperature setting

Wait for a while
Set the temperature properly

Wait for power restoring

Switch on the main power switch

Change the fuse

CAUTION:

When the power cord is to be replaced, replacement work shall be performed by authorized
personnel only.

TROUBLESHOOTING

What to do

Display
code

Number

Problems

E1、 E2
E3、 E4

Temperature Sensor is off or
short-circuit.

Contact service people

Outdoor unit protection

Electrostatic dust collection

The temperature of the evaporator
of indoor unit is too low or high (For
the protection feature, the
compressor turns off automatically)

Turn off the unit, clean the air filter,
then restart the unit. If this operation
does not work, please contact service
people.

The temperature of condenser of
the outdoor unit is too high (For the
protection feature, the compressor
turns off automatically)

Turn off the unit, check if there is any
obstacle in the air-inlet, otherwise call
the service people.

Defrosting protection or warm-air
controlling is off

The unit will auto restart after finishing
the defrosting or the temperature of the
Heat Exchanger of indoor unit raise.