Well, I FINALLY figured out the top secret reset info for the "no co" lock-out code problem. Norcold has a tech pub out on this issue that they are keeping VERY close to the vest..
Pub # 120803B All you have to do is jumper one wire on the control/power board to reset "lock-out"!
DISCLAIMER:
BEWARE IF YOU USE THIS PROCEEDURE AND YOU SCREW IT UP YOU COULD DO SOME REAL DAMMAGE TO YOUR UNIT AND PROBABLY VOID YOUR WARRANTY OR WORSE...CREAT MORE PROBLEMS THAN YOU HAD TO START WITH. I HAVE SEEN IT DONE AND IT WORKS. I AM NOT RECOMMENDING DOING THIS PROCEDURE HOWEVER IF YOU DO IT YOU SHOULD HAVE A GOOD UNDERSTANDING OF ELECTRONICS. I am a Senior Electronics Engineer.
1. Turn off refrigerator
2. Disconnect the following wires on the power board in the black plastic box.
IN THE ORDER SHOWN.
a) 12VDC. Positive and negative wires
b) AC power cord.
c)Solenoid gas valve wires.
d) Spark/sense electrode assembly wire
3. Remove the black power board cover.
4. Reconnect the wires in the reverse order you removed them in above step number 2.
a) Spark/sense electrode assembly wire
b) Solenoid gas valve wires.
c) AC power cord.
d) 12VDC. Positive and negative wires
5. Turn on the refrigerator.
6.Locate pin 15 on the wire harness 16 pin connector (P1) Pin 15 is the socket to the right of the white/violet wire. Looking at the socket on the board it will be the SECOND PIN over FROM LEFT TO RIGHT on the TOP row.
NOTE: do NOT remove the connector! Pin 15 has no wire in it...just stick your jumper into that hole making sure you actually make contact with the internal pin. sometimes this is difficult unless you use solid wire vice stranded.
7. Using an insulated jumper wire short pin 15 to the power board ground lug for 10-15 seconds. You will hear a click sound indicating that it has reset.
8.Turn OFF the refrigerator.
9. Turn ON refrigerator to verify the "no co" has cleared. If not perform the reset again.
10. Turn OFF the refrigerator.
11. Disconnect the wires again in the following order
a) 12VDC. Positive and negative wires
b) AC power cord.
c)Solenoid gas valve wires.
d) Spark/sense electrode assembly wire
12. Install the power board black plastic cover.
13. reconnect the wires in reverse from step 11.
a) Spark/sense electrode assembly wire
b) Solenoid gas valve wires.
c) AC power cord.
d) 12VDC. Positive and negative wires
14. Place refrigerator in service.
Thats all there is to it!
My own opinion?.....Norcold has some REAL design issues with this system and needs to re-engineer that boards logic. I am going to recommend to Northwood (I have an Artic Fox Cab-over camper and love it) that they discontinue using Norcold till they fix this problem. This could be a political and financial hot potato with them. I am sure.
For now, MY personal solution is to turn off the refrigerator when traveling. The refrigerators brain gets messed up when the unit is being bounced around on the road and is WAY TOO SENSITIVE to taking actions that put it in lock-out.
Good luck
no_name_guy
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edited 04/04/06 06:23am by no_name_guy *
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I typed Lock-out reset instructions for Norcold N841-3 Refer in yahoo search engine and it did not find it. Anyone know why it would not find it?
Maybe I should have spelled it different? i.e. Lockout reset procedures for Norcold N841-3 Refrigerator? This information does no one any good if it cannot be found.....
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