Propane vs AC on Dometic Refrigerator

[rich85704]

If I run my Dometic fridge on propane it seems to get colder quicker than if I set it to "AUTO" and let it switch between AC and propane depending on whether AC is available.

Is this usual?

Apologies if this has been discussed before; I searched a lot and didn't find this.

Rich

[Range_Maggot_Bo]

Old-Biscuit wrote:

cavie wrote:
YES, will run cheaper (If you paying for electric)and get colder than AC. Move the thermister down on the fins when on Gas.

Why do you want OP to move thermistor?
Thermostat controls heat cycles regardless of heat source based on feedback from thermistor.


On fridge WITH temp settings on upper panel.thermostat is calibrated for temp sensing from thermistor on a specific FIN position


On fridges with "AUTO TEMP CONTROL" (NO temp set points)
Moving it DOWN means warmer
Moving it UP means Cooler
Overall temp effect is 4-6*F




Propane & electric transfer basically same temp to boiler section
Propane does 'start' the process sooner due to hot flame

My fridge fan cycles on a little bit more than neccessary because of it's location.It was explained to me that part of the problem was where the "thermistor", as you call it, is located. It can be moved just a little either way to prevent too much cycling.

[TomG2]

Electric usage is more expensive. Propane is not free, but cheaper. I am paying $0.175/kwh for electricity. Was costing me over $50/month for electric.

[cavie]

Old-Biscuit wrote:

cavie wrote:
YES, will run cheaper (If you paying for electric)and get colder than AC. Move the thermister down on the fins when on Gas.

[COLOR=]Why do you want OP to move thermistor?



On fridge WITH temp settings on upper panel.thermostat is calibrated for temp sensing from thermistor on a specific FIN position


On fridges with "AUTO TEMP CONTROL" (NO temp set points)
Moving it DOWN means warmer
Moving it UP means Cooler
Overall temp effect is 4-6*F




Propane & electric transfer basically same temp to boiler section
Propane does 'start' the process sooner due to hot flame

When I run my fridge on gas it runs colder than when on Electric. On gas I don't need all that cold. I slide the thermister down a little to keep the same temp as electric. I have done the math and it's cheaper to run on gas. I'm seasonal for 4 months and pay for electric. I don't have temp settings. Moving the thermister up and down the fin is the temp sencer. At least that is what the arrow in the side wall says.

[Old-Biscuit]

cavie wrote:
YES, will run cheaper (If you paying for electric)and get colder than AC. Move the thermister down on the fins when on Gas.

Why do you want OP to move thermistor?
Thermostat controls heat cycles regardless of heat source based on feedback from thermistor.


On fridge WITH temp settings on upper panel.thermostat is calibrated for temp sensing from thermistor on a specific FIN position


On fridges with "AUTO TEMP CONTROL" (NO temp set points)
Moving it DOWN means warmer
Moving it UP means Cooler
Overall temp effect is 4-6*F




Propane & electric transfer basically same temp to boiler section
Propane does 'start' the process sooner due to hot flame

[Lwiddis]

I pretty much never switch off propane.

[cavie]

YES, will run cheaper (If you paying for electric)and get colder than AC. Move the thermister down on the fins when on Gas.

[BB_TX]

Oddly enough, the fridge cools because of a heating process. Apparently propane provides more heat than the electric heating element.

[midnightsadie]

mine does to .don,t seem to hurt it.