Good Sam Club Open Roads Forum: Propane vs AC on Dometic Refrigerator
Open Roads Forum Already a member? Login here.   If not, Register Today!  |  Help

Newest  |  Active  |  Popular  |  RVing FAQ Forum Rules  |  Forum Posting Help and Support  |  Contact  

Search:   Advanced Search

Search only in General RVing Issues

Open Roads Forum  >  General RVing Issues

 > Propane vs AC on Dometic Refrigerator

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
rich85704

Tucson, AZ

Full Member

Joined: 03/18/2014

View Profile



Good Sam RV Club Member

Offline
Posted: 08/12/19 04:31pm Link  |  Quote  |  Print  |  Notify Moderator

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


1999 Coachmen Santara Class C -- 24-foot
Ford V10

midnightsadie

ohio

Senior Member

Joined: 01/07/2008

View Profile


Offline
Posted: 08/12/19 04:37pm Link  |  Quote  |  Print  |  Notify Moderator

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

BB_TX

McKinney, Texas

Senior Member

Joined: 04/04/2005

View Profile


Offline
Posted: 08/12/19 04:57pm Link  |  Quote  |  Print  |  Notify Moderator

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

cavie

Port Charlotte Fl/ Hindsdale MA

Senior Member

Joined: 04/28/2019

View Profile


Offline
Posted: 08/12/19 05:15pm Link  |  Quote  |  Print  |  Notify Moderator

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


2011 Keystone Sprinter 323BHS. Retired Master Electrician. Retired Building Inspector.

All Motor Homes are RV's. All RV's are not Motor Homes.

Lwiddis

Bishop, CA

Senior Member

Joined: 08/12/2016

View Profile



Good Sam RV Club Member

Offline
Posted: 08/12/19 05:16pm Link  |  Quote  |  Print  |  Notify Moderator

I pretty much never switch off propane.


Winnebago 2101DS TT & 2019 Chevy Silverado LTZ Z71, 300 watts solar-parallel & MPPT, Trojan T-125s. TALL flagpole for flags. Prefer USFS, COE, BLM, NPS, TVA, USF&WS, state & county camps. Bicyclist! 14 year Army vet - 11B40 then 11A - old MOS 1542 & 1560.


Old-Biscuit

Verde Valley

Senior Member

Joined: 06/20/2009

View Profile



Posted: 08/12/19 06:35pm Link  |  Quote  |  Print  |  Notify Moderator

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


Is it time for your medication or mine?


2007 DODGE 3500 QC SRW 5.9L CTD In-Bed 'quiet gen'
2007 HitchHiker II 32.5 UKTG 2000W Xantex Inverter
On the Road Debt Free April '07
Off the road still Debt Free Jan. '14

cavie

Port Charlotte Fl/ Hindsdale MA

Senior Member

Joined: 04/28/2019

View Profile


Offline
Posted: 08/12/19 08:33pm Link  |  Quote  |  Print  |  Notify Moderator

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?



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.

TomG2

Central Illinois

Senior Member

Joined: 03/07/2004

View Profile



Posted: 08/12/19 08:40pm Link  |  Quote  |  Print  |  Notify Moderator

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.

Range Maggot Bob

Missouri

Full Member

Joined: 09/21/2017

View Profile


Offline
Posted: 08/13/19 03:51pm Link  |  Quote  |  Print  |  Notify Moderator

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.

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 

Open Roads Forum  >  General RVing Issues

 > Propane vs AC on Dometic Refrigerator
Search:   Advanced Search

Search only in General RVing Issues


New posts No new posts
Closed, new posts Closed, no new posts
Moved, new posts Moved, no new posts

Adjust text size:

© 2019 CWI, Inc. © 2019 Good Sam Enterprises, LLC. All Rights Reserved. | Terms of Use | PRIVACY POLICY | YOUR PRIVACY RIGHTS