Troubles And Solutions - Carrier 42/38KCJ024713 Technical & Service Manual

P9 Protection of defrosting or anti-cold wind
E1 Open-circuit and short-circuit of temperature sensors T1
E2 Temp. sensor T2 on indoor evaporator is open circuit or short circuit
E3 The condenser temperature sensor T3 is open or short
E6 Protection of outdoor unit
8.2.1 LEDs for the indication of outdoor trouble
In normal operation, LEDs emit no light and they will flash at a frequency of 5 Hz when
trouble occurs. Their codes are listed in the following table:
LED1 LED2
Off Off
On Off
Off On
On On

8.3 Troubles and Solutions

Before calling for service, please review the following list of common problems and
solutions.
If any of the following conditions occur, check your unit and resolve corresponding
problems referring to given remediation. If the trouble can't be settled contact our
dealer.
Trouble Cause
Unit does not Power failure.
start
Power switch is open.
Fuse of power switch may have
blown.
Batteries remote controller are
exhausted.
The time is not start-up time you
have set.
Air flowing Temperature is not set correctly.
normally with
low Door or window is open.
cooling(heating)
Air filter is blocked with dust or
effect
dirtiness.
Inlet/outlet of indoor/outdoor units
are blocked.
Inlet/outlet of indoor/outdoor units
are blocked.
LED3 Contents
On Ok
On Phase sequence error
On Overload of current
On Lack of phase
24
Exploded view & spare-part
Solutions
Wait for the comeback of
power
Switch on the power
Replace the fuse
Replace the batteries
Wait or cancel the time set.
Set the temperature
properly.
Close door and window.
Clean the air filter.
Clear all blockages.
Clear the blockage, then
restart your operation.