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 > Older fridge cooling Better on 110 than propane

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ernie1

Sacramento,California,USA

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Posted: 07/09/19 09:50pm Link  |  Quote  |  Print  |  Notify Moderator

Okay so I tested my pressures. 11' with no draw from appliances. With the generator on it was 10". With the furnace on also it dropped to 9". With the refer on also there was no noticeable drop. I also tested the draw across the gas solenoid and it was 108.5 ohms. What say any of you guys in the know? Is there a problem? Also there is about a 1/2" clearance between the condensor and the wall. I know, it's excessive and I will take care of that but, again the unit works fine on ac and 12v.

NRALIFR

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Posted: 07/10/19 03:53am Link  |  Quote  |  Print  |  Notify Moderator

Yes, the LP pressure is too low. It should be adjusted to maintain 11.5” with most of the LP appliances going. In fact, I would try to adjust it for 11.5” with the furnace, water heater, and generator going. If it won’t adjust, you’ll need to replace the regulator.

Your regulator should be sized by the total btu’s of the LP appliances it’s supplying gas to.

Here’s a link to a topic of mine that is very similar to this one. You might find it helpful.

LP System Questions Topic

[emoticon][emoticon]


2001 Lance 1121 on a 2016 F450


ernie1

Sacramento,California,USA

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Posted: 07/10/19 11:29am Link  |  Quote  |  Print  |  Notify Moderator

NRALIFR: Wow! This is exactly the info I needed especially because it's to the point where my problem stems from and I will follow through with the regulator adjustment. I was leaning towards doing something like this and was looking for confirmation from people who have experienced this problem but up to this point, no one would come forward with this info.. Well, you're the man! I will post the results when I can. I'm really curious as to where the black stinky liquid comes from and is it an issue that needs to be addressed. Seems other people have mentioned it in the past. Just curious, what was your propane pressure after your final adjustment and with no appliances drawing from the system?

NRALIFR

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Posted: 07/11/19 12:15pm Link  |  Quote  |  Print  |  Notify Moderator

Well, to be honest I don’t remember even looking at the static pressure. I would guess that it would be higher than 11.5”. I don’t really consider the static pressure to be significant unless you’re doing a leak check of the system. The regulator needs to have some load on it to regulate.

But, you’re in luck. I didn’t want to spend another day up on a ladder painting the house, so I gave myself the day off (I can do that since I’m the boss of just darn near everything around here, at least while SWMBO is at work). [emoticon]

It’s been almost a year since I replaced the LP regulator, and bought the digital manometer, so it was probably a good idea to check it again. As I said in the topic I linked to, the test port plug at the fridge is frozen and I can’t remove it. I twisted an Allen wrench into a pretzel last year trying to get it out and it never budged. After finding that the valve it’s part of cost $150, I quit trying to get it out.

This is the pressure with the fridge, furnace, water heater, and the generator running. I had the generator loaded about 50% using an electric heater. The pressure is about the same with the furnace off, and the AC loading the generator. The displayed pressure is actually bouncing around +/- .1 or so, but I tried to adjust the regulator so that most of the time it was above 11.5”.

[image]

And this is the pressure with nothing but the fridge running. Again, this is at the regulator. It might show slightly lower, and with less fluctuations if I could check it at the fridge. That’s less than one ounce per square inch difference between the two numbers.

[image]

Edit: Being an unapologetic OCD kind of guy, I started wondering if maybe I was checking and adjusting the LP pressure with too much load on the system. After all, the generator and furnace are both gas hogs compared to the other LP appliances. So, I rechecked things with the generator off, but all the other LP appliances running. The readings were virtually identical. In order to maintain 11.5” h2o with the furnace, WH, stove/oven and fridge going, the regulator had to be adjusted such that the pressure rose to about 12.7-12.9” h2o with just the fridge running. It is what it is, I guess.

[emoticon][emoticon]

* This post was edited 07/11/19 04:31pm by NRALIFR *

Bobbo

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Posted: 07/11/19 07:28pm Link  |  Quote  |  Print  |  Notify Moderator

Wrong thread


Bobbo, Linda and the furry kid (45 pound rescue)
2017 F-150 XLT 4x4 SuperCab w/Max Tow Package 3.5l EcoBoost V6
2017 Airstream Flying Cloud 23FB


ernie1

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Posted: 07/11/19 11:07pm Link  |  Quote  |  Print  |  Notify Moderator

NRALIFR: Well after about 24 hrs of running my refer at about 12.2" I'm at 48.7 deg F. So I turned my fans on and the temp went up to 50 deg. F. I give up, I quit. Maybe a new compressor fridge is on the horizon. Don't know but I gave it the "college " try, reached out to others, got some good info, got some condescending info, been accused of highjacking a thread, but I do know this, I've had it. Thanks for your help.

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