RV Fridge with No Temperature Controls
Hi all, I just bought a brand new fridge for my RV, a two-way Dometic RM2351 and after I took it out of the packaging I realized that it has no temperature controls. It boggles my mind that Dometic w...
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From THIS manual I found this:
If necessary, adjust the thermostat by pressing the
Temperature selector button.
(RM2351, RM2451, RM2551, DM2652 &
DM2852: The temperature is controlled by a factory
preset temperature setting.)
It doesn't appear you have temperature adjustability but there is a thermistor connected to the cooling fins
The coffee freezing as you described indicates you are in Limp Mode. From the same manual:
LIMP MODE OF OPERATION
In the event of a failure of a major operating component, the control system will continue to operate the cooling system. RM2351, RM2451, RM2551, DM2652 & DM2852
If the control can not read the temperature sensor and control the preset temperature, the control will run the cooling unit continuously at the energy source available. The refrigerator will continue to operate in this mode indefinitely - or - until a new sensor is installed and the system reset.
I suspect either the thermistor is not in contact with the fin (the thermistor has to physically touch the cooling fin), the thermistor is not properly connected to the control board (P2) or the control board is not functioning properly.
As far as the fan you mentioned is concerned, this fan helps cool the external coil during hot summer months. Yes, it is advised to install this fan but lacking this function is not causing your coffee to freeze. The fridge is continuously running, over cooling the compartment.
Good Luck
If necessary, adjust the thermostat by pressing the
Temperature selector button.
(RM2351, RM2451, RM2551, DM2652 &
DM2852: The temperature is controlled by a factory
preset temperature setting.)
It doesn't appear you have temperature adjustability but there is a thermistor connected to the cooling fins
The coffee freezing as you described indicates you are in Limp Mode. From the same manual:
LIMP MODE OF OPERATION
In the event of a failure of a major operating component, the control system will continue to operate the cooling system. RM2351, RM2451, RM2551, DM2652 & DM2852
If the control can not read the temperature sensor and control the preset temperature, the control will run the cooling unit continuously at the energy source available. The refrigerator will continue to operate in this mode indefinitely - or - until a new sensor is installed and the system reset.
I suspect either the thermistor is not in contact with the fin (the thermistor has to physically touch the cooling fin), the thermistor is not properly connected to the control board (P2) or the control board is not functioning properly.
As far as the fan you mentioned is concerned, this fan helps cool the external coil during hot summer months. Yes, it is advised to install this fan but lacking this function is not causing your coffee to freeze. The fridge is continuously running, over cooling the compartment.
Good Luck
