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RF32FMQDBSR/AA-10 Samsung French 4 door fridge not cold. It's r134a

Randyadamlloyd

Premium Member
Joined
Dec 1, 2020
Messages
14
Location
Massachusetts
Model Number
RF32FMQDBSR
Brand
Samsung
Age
1-5 years
I have a Samsung RF32FMQDBSR/AA-10 French door tri Cool fridge.
The freezer is fine, ice maker is fine.
The fridge is 5 years and several weeks old.

The fridge is 52 degrees.
I replaced the temp sensor and thermistor.
The coils are not frozen but they do feel cool.
It's r134a system not the flammable stuff.
(Every post I find is about the flammable stuff).

Are there other sensors I can replace?
How does this particular system handle defrost? There are no defrost coils.

Is it tied to one of the bottom freezers?
Should I replace the humidity sensor?

*Sorry for the long post but this is going to help others with Google searches, I hope.

Thanks for your time and input.
 

Randyadamlloyd

Premium Member
Joined
Dec 1, 2020
Messages
14
Location
Massachusetts
Also of note the compressor isn't running constantly. It seems like it should be running non stop until it reaches set temp?
Thanks again
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
115,889
Location
McMullen Valley, Arizona
Hi,

Tell us how many times the LED on the inverter board is flashing. Its located in the very back of your refrigerator behind the cover on the back exterior wall.

Here's the inverter board for your model:
Assy Pcb Inverter


Jake
 

Randyadamlloyd

Premium Member
Joined
Dec 1, 2020
Messages
14
Location
Massachusetts
Jake thanks for responding.
LED is solid. There are two. The bottom one is always on the middle board where the second led stays solid when the compressor is running.
 

Randyadamlloyd

Premium Member
Joined
Dec 1, 2020
Messages
14
Location
Massachusetts
Jake thanks for replying

Both LEDs are solid red
The middle board the led is only on when the compressor runs for the fridge. It's not as bright as the PCB led.
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
115,889
Location
McMullen Valley, Arizona
Ok Randy, solid red is good.

So you may have a sealed system problem. Can you keep your hand on the compressor or is it too hot to do that?

Jake
 

Randyadamlloyd

Premium Member
Joined
Dec 1, 2020
Messages
14
Location
Massachusetts
The compressor gets warm but not hot. About 115 degrees. According to IR temp thing. Has body / surface temp reading.

Also note the interior coils(forgive me I forget the names) are 50 degrees. Room temp 62.
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
115,889
Location
McMullen Valley, Arizona
Ok, If the compressor is running and its not making a even frost pattern on the evaporator coil, then you have a sealed system problem.

Jake
 

Randyadamlloyd

Premium Member
Joined
Dec 1, 2020
Messages
14
Location
Massachusetts
Dam.
Thank you Jake for your time. Can I pester you for one last question?
Say I sweat on a stem valve how do I add 3.7 ounces?(or is it 7.23?). Worried about overcharging.

Thanks

Randy
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
115,889
Location
McMullen Valley, Arizona
You can't just add refrigerant and expect it to work, anytime you open the sealed system you always have to replace the filter drier.

You may have other sealed system problems going on too, like a restriction or a inefficient compressor.

Jake
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
115,889
Location
McMullen Valley, Arizona
Ok, sounds good.(y)

Jake
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
115,889
Location
McMullen Valley, Arizona
Ok, good. Did he install a new filter drier too?

Jake
 

Jake

Appliance Tech - Admin
Staff member
Joined
Aug 24, 2004
Messages
115,889
Location
McMullen Valley, Arizona
Yes, you're always supposed too.:)

Hopefully it be fine, fingers crossed. 🤞

Jake
 

Randyadamlloyd

Premium Member
Joined
Dec 1, 2020
Messages
14
Location
Massachusetts
Fridge update it held temp for about ten days. Shot in some more Freon waiting on a friend that does HVAC to come with a good sniffer to try to locate the leak.

Maybe we'll try leak stop
 
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