Question about Dometic Rooftop RV Air Conditioner

1 Answer

I get F4 (Freeze control failure) on my Dometic Penguin A/C

It is plenty warm out (80's) and can not get the A/C to work all I get is a F4 (Freeze control failure) on the thermostat. Please help.

Posted by on

  • Danny Clark
    Danny Clark May 11, 2010

    Arew the filters dirty?



1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

This is from the service manual:

a. Turn the ON/OFF switch to .OFF. position.
b. Simultaneously depress and hold the MODE and ZONE
push-buttons while turning the ON/OFF switch to .ON..
FF should appear in the LCD display until the MODE
and ZONE push-buttons are released.
c. When a dip switch is turned on or off after initial configu
ration, a system reset will need to be done before the
Comfort Control CenterTM will recognize the updated selection

Hope this helps

Posted on Mar 08, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya Repairman can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Repairman (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers

Why would I have not heat from the cabin heater in my GMC Sonoma?

Could be a blocked heater core or a faulty air temp door under the dash.

Sep 12, 2014 | GMC Sonoma Cars & Trucks

2 Answers

1997 pontiac sunfire dosent warm up

check you coolant level. thos car are known for head gasket. if its a 2.2 liter check the fron right of the engine between cylinder head and engine block. if its a 3.1 the cylinder head crack behind the alternator mount. could also be you coolant thermostat. hope it help

Dec 21, 2012 | 2000 Pontiac Sunfire

1 Answer

I am not able to adjust the temperature on the freeze protection.

Unknown which freeze control you have.

Usually the adjustment range is small for pool timer controls since pipes are made of plastic.

You can buy thermostat controls and convert them to freeze controls and give yourself wider range of temperatures.
Cadet 72801 has range from 80 to 40 degrees, and turns ON when temperature rises above set point.
You can reverse operation so it turns on when temperature drops below set point by installing DPDT relay.
10 amp use Omron LY2-AC or 30 amp use 5X847 relay.

Oct 27, 2012 | Pool & Spa

1 Answer

The freeze protection just quit qorking when it dropped to freezing i turned the dial to 45 and it still will not come on has been working non stop for about 4 days. i am in the dfw area

You can replaced the freeze control without buying entire timer:

Google: "Intermatic thermostat freeze control" to see cross selection of choices.
For example Smarthome sells PF1103 for $80: works for 120 or 240

To prevent freezing right now, the pump should run full time, so pull trippers off the timer dial, and mover override lever to ON position. This will keep the pump running.
When the temperature rises, put trippers back on dial, and then order new part.

Add a comment for more free help.
Also take advantage of fixya phone service.
For a price, expert speaks with you over phone while you work on timer or any do-it-yourself project.
Fixya is always less expensive than a service call.

Feb 06, 2011 | Intermatic Timer PF1202T Multi Circuit...

1 Answer

I need only the thermostat part of unit pf1202t. Please advise plus price.

1) Smarthome sells for $80
Double check model numbers

2) Google search for: Intermatic freeze protection thermostat

3) Add a comment for more free help.
Also take advantage of fixya phone service.
For a price, fixya expert speaks with you over phone while you work on timer.

Jan 04, 2011 | Intermatic Timer PF1202T Multi Circuit...

Not finding what you are looking for?
Dometic Rooftop RV Air Conditioner Logo

358 people viewed this question

Ask a Question

Usually answered in minutes!

Top Dometic Heating & Cooling Experts

Bill Long

Level 3 Expert

588 Answers

Donni Steen

Level 3 Expert

659 Answers

mike cooper

Level 3 Expert

884 Answers

Are you a Dometic Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides