-
152
-
3
Error display
:
e33
[Inverter primary current abnormal] [Only case of 151~251 type]
Indoor unit
Red LED
Green LED
Stays OFF
Keeps flashing
Red LED
1 time flash
Outdoor unit
YES
YES
YES
NO
NO
NO
Is the power supply normal?
Restore it to the
normal state.
Restore it to the
normal state.
Remove any foreign matter
such as dust or dirt.
Replace the control PCB.
Is the voltage within
the specified range?
Is there any foreign matter
such as dust or dirt on the control
PCB soldered surfaces?
●
Display Conditions
If the inverter’s primary current exceeds the set value for 3 sec-
onds, the compressor stops. After a 3 minute delay, it restarts, but
when this occurs 5 times within 60 minutes.
[Compressor overcurrent trouble] [Only case of 301~601 type]
Indoor unit
Red LED
Green LED
Stays OFF
Keeps flashing
Red LED
Green LED
1 time flash
Keeps flashing
Outdoor unit
YES
YES
NO
NO
Is the voltage
AC220/240V between the
L1 and L3 phases and between the L2
and L3 phases on the 52C
secondary side?
Is there overcurrent
at the compressor?
Out of phase between the
L1 and L2 phases.
Check the unit side.
• Compressor is faulty. Replace
• 52C is faulty.
• There is a disconnection between
52C and CM or in the L1 and L2
phases between TB1 and 52C.
• During cooling: Is FMo turning?
• During heating: Is FM
I
turning?
Is the service valve (gas side) fully open?
Is the filter clogged?
• Is there an overcharge?
• Is the installation space for the indoor and
outdoor units proper?
• Is there a short circuit in the indoor or outdoor units?
(1)
Outdoor unit control PCB is
faulty. Replace
(The CT input circuit is faulty.)
• Is the power supply voltage proper? (Isn’t it too low?)
• Are the power lines proper? (Aren’t they too thin?)
• Is the overcurrent setting correct? (SW3 setting)
• Is the compressor running with an overload?
• Is the compressor locked?
Notes (1) Measure the overcurrent value to make sure.
Also make sure the overcurrent setting set with SW3 and SW4-1 on the outdoor unit control PCB
is not incorrect.
