Ammonia smell when air conditioning running,is it safe to be in trailer

Make sure your roof vent is not clogged immediately. If you are in a full service park, you should be running on electricity not propane. You don't describe the gasses you are smelling, if it is ammonia, your frig is probably done for.

Ammonia is the primary ingredient in the cooling process. What happens is the ammonia is boiled and then sprayed throug an orfice. The spraying creates the cooling (heat removing) effect. If you are smelling ammonia, your boiler has developed a leak.

You can purchase replacement units to install in your present frig. Some people have success with this. My experience was not so good. I spent about $225.00 plus shipping for a rebuilt unit (with a 'core' charge). I did the work myself. I got about a year out of the rebuilt unit before I simply replaced the frig with a new replacement 3 way Norcold. My new Norcold was much improved over the earlier model and included a ice maker! It was expensive, however, at more than $1300.00. Find sources for replacement cooling units for your "Thetford" refrig at FixYa.com advertisers or through your RV dealer or in the back of travel trailer magazines.

I hope this is NOT your trouble and I hope you find resolution. Thank you for your interest in FixYa.com and please come again.

R134 is tasteless and oderless, this is most lkely mold and mildew

If you have run the a/c during the summer particles of dust and debris stick to the electic coils and once they are activated the smell is the debris that has accumulated on the heater coils. Run the unit for a few minutes and the smell should subside.

Good Luck

Dave

gas is leaking the compelet piping control is nessecery

possibly your fresh air intake from outside, what is stored or going on outside or on the roof??

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The smell you are getting isn't ammonia, it's CHLORINE GAS! Here's what's happening....When you do not use the RV for a while, the solids in the holding tank concentrate, and the amount of naturally produced ammonia increases. When you add chlorine bleach (sodium hypochlorite) to the holding tank, the chemical reaction of the two liberates chlorine gasses, which your air conditioner is spreading about the coach. My best advice would be to flush your holding tank as well as possible, and to always flush it thoroughly before putting it away for a few months. Also, make sure that your holding tank vent is open and operational. Your vent should not be too close to your A/C's fresh air intake (this should be checked, as it is the likely path that the gas is taking). Never run straight bleach into the tank without having yourself an escape plan. The reaction can cause the gas to be produced in a higher volume than the vent stack can accomidate, and liquids/gasses can come back up your drains violently under extreme conditions. I don't want to scare you, but ammonia and bleach just don't mix. Ventilate your area as thoroughly as possible whenever you have to put straight bleach in the tank. Open windows and doors, turn on exhaust fans. If you get any hints of chlorine gas, vacate the area. People have died from being overcome by the gasses, not just in RV's but in their homes as well.
Best wishes and regards, --W/D--

Ammonia is just what you a re smelling as the coolant is ammonia based Your cooling unit has leaked and is done for- Sorry I had to be the one to tell you

2 choices Replace the refer or Replace the coiling unit, I would suggest replacing the refer and having a new warranty

most likely you do have drainage problems where it is backing up

sounds like you have an old unit and it has a leak , the real old units where filled with ammonia as the gas

try soaking the grid plate in ammonia