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View Full Version : very big problem with refrigerator comp.heat up low cooling in REF portion


jahangir.ahmad
09-07-2008, 10:41 AM
hi every one

i've very big problem in my refrigerator
that in my refrigerator compressor heat up early and low cooling in refrigerator portion (not in freezer side)
and also compressor oil chock

please tell me reason and tell me

what can i do with existing 250 units (low cooling) what can i do with them
scrap them or any solution u have
what is the problem
our unit capcity is 340L
and we are using matsusita compressor 7.7cc
can problem in compressor or ???????

speacialy to BRAIN _UK, JOSIP, US ICEMAN AND ALL THE MEMBERS
PLEASE TELL ME WHAT WRONG WITH MY REFRIGERATOR

THANKS

JAHANGIR AHMAD KHAN
LAHORE PAKISTAN
chemi-cool
09-07-2008, 06:23 PM
You didn't say what refrigerant they are using.
If its 134a, my guess is a blocked filter drier.
GXMPLX
09-07-2008, 07:35 PM
Is the condenser inside the insulation? If this is so probably you have leaks and low refrigerant charge.

It is impossible to diagnose without more information. You need to install pinch off valves in one refrigerator and measure suction and discharge pressures and temperatures.

And refrigerant too as chemi-cool asked!
Peter_1
09-07-2008, 10:17 PM
Chem, sssshhhhttt, you weren't mentioend in the list of persons to help ;)
Josip
09-07-2008, 10:29 PM
Hi, Peter_1 :)


Chem, sssshhhhttt, you weren't mentioend in the list of persons to help ;)

.... is that reason why you not try to help;)

Best regards, Josip :)
jahangir.ahmad
11-07-2008, 12:21 PM
hii every one

we are using R134a
and direct cool refrigerator

condensor outside of the refrigerator

this problem with 250 refrigerators not a single its came from enduser

more question please feel free to talk

thanks for urs reply

jahngir ahmad khan
lahore pakistan
powell
11-07-2008, 03:07 PM
You have 250 units with the same problem.:eek:

Definetly a design problem. Let's see, a refrigerant cooled compressor that's overheating.

1. undesized condenser
2. condenser not designed for high ambient (if applicable)
3. return gas temp too high
4. compression ratio too high
5. suction pressure too low

P.S. what does "compressor oil chock" refer too?