Jump to content
jean pierrre

norcold only works on lp

Recommended Posts

Hello, i have  a norcold 811 and it automatically chooses lp while on auto.

here,s what i have done:

check if ac. i plugged a 1000w heater and it works

checked fuses and they are fine.

the only thing that happened while my fridge started choosing lp is that my rv battery died. I did get a new one but the fridge still chooses lp on auto mode.

Help please!

Share this post


Link to post
Share on other sites

When you say "check if ac," do you mean in the whole RV or at the outlet for the refrigerator? If the fridge works on propane, then you know you have 12 volts for the controls. If there is AC at the outlet at the back of the fridge, that would narrow the problem down to the refrigerator control board or the heating elements in the cooling unit.

Rob

Share this post


Link to post
Share on other sites
6 minutes ago, Second Chance said:

When you say "check if ac," do you mean in the whole RV or at the outlet for the refrigerator? If the fridge works on propane, then you know you have 12 volts for the controls. If there is AC at the outlet at the back of the fridge, that would narrow the problem down to the refrigerator control board or the heating elements in the cooling unit.

Rob

at the outlet of the fridge

Share this post


Link to post
Share on other sites
1 hour ago, jean pierrre said:

at the outlet of the fridge

Then I'm voting for the control board or the resistive heating element(s) on the fridge (some models have one electric element, others have two). If you have a multimeter and are comfortable doing this type of thing, you can use Google and find out how to check output to the heating element from the relay and/or check the resistance of the heating element. If you're not experienced in this type of thing, don't do  it since it's 110 AC. 

Rob

Share this post


Link to post
Share on other sites

I'm in the same camp as Second Chance on this one. If there's a good solid 120 VAC available but the heating element isn't  working, its either the element is bad/open or the control board isn't sending it voltage (unless there a blown fuse or bad connection????). A quick and easy ohm test of the element(s) and a voltage reading at the element(s) itself should help provide the answer. One of the boards other functions is to sense if 120 volts is available and if that function is faulty it could auto switch to LP Gas, that (if heater itself is fine) leads to the problem as being the board (not sensing 120 orrrrrrrr sensing it but failing to close a relay to send 120 to element). 

 Get an Ohm Meter and an AC Voltmeter and go to work provided you know what you're doing ???

John T

Share this post


Link to post
Share on other sites
3 hours ago, jean pierrre said:

i have  a norcold 811 and it automatically chooses lp while on auto.

There are several possible causes of that problem and while it could be a control circuit board, I strongly suggest that you do some trouble shooting before you start to swap parts. It is important to note that if you buy a new circuit board, once the packaging has been opened you can not return it since the seller has no way to know what may have been done with it. I suggest that you start by down loading a copy of the Norcold 811 Service Manual and take a look through it. Page 7 of the manual has some basic trouble shooting and page 8 has the fault codes. Page 18 has some trouble shooting with a meter of the 120V side of the system. The site on this link has available all of the documentation for the NC 811.

If you do choose to replace circuit boards, I strongly recommend that you use the replacements from Dinosaur Electronics

Share this post


Link to post
Share on other sites
11 hours ago, Kirk W said:

I strongly recommend that you use the replacements from Dinosaur Electronics

Having replaced many boards over 49 years of RVing (even before I ever heard of Dinosaur lol) so far I HAVE NEVER HAD A DINOSAUR REPLACEMENT BOARD GO BAD. Once years ago I called Dinosaur for tech support on a Saturday and they were basically closed HOWEVER the actual owner/president answered and helped me troubleshoot over the phone and solved the problem........... 

John T

Share this post


Link to post
Share on other sites

  It is 5 am where I am at. 5:30 I looked at the clock again.

 

  Is there a 110 volt fuse on the board.  I would replace that fuse. Then follow 110 volt with a volt meter meter.

 

  First thoughts of the day,    Vern

Share this post


Link to post
Share on other sites

I have listed the Norcold reset procedure below. If all connections and voltages are proper, give the reset a try. It's common knowledge to most techs.

1. Turn OFF the refrigerator.

2. Disconnect the following from power board:

a. 12 VDC positive and negative wires.

b. AC power cord.

c. Gas valve solenoid coil wires.

d. Spark/sense electrode assembly wires.

3. Remove the power board cover.

4. Reconnect a, b, c, & d disconnected in step 2.

5. Turn ON the refrigerator.

6. Locate Pin 15 on 16 pin connector (P1). Pin 15 is the empty socket to the right of the white/violet wire on the top row. See figure to the left.

7. Using an insulated jumper wire, short Pin 15 to the power board ground lug for 10 - 15 seconds. A click sound will indicate when the controls have reset.

8. Turn OFF the refrigerator.

9. Turn ON refrigerator. 

Richard

Edited by rls7201

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...

RVers Online University

campgroundviews.com

Our program provides accurate individual wheel weights for your RV, toad, and tow vehicle, and will help you trim the pounds if you need to.

DFW RV Roof

RVAir The cleanest air in RVing!

Rv Share

Dish For My RV.

Find out more or sign up for Escapees RV'ers Bootcamp.

Advertise your product or service here.

The Rvers- Now Streaming

AGS Now Hiring

RV Pet Safety

RVTravel.com Logo



×
×
  • Create New...