| |
Subject |
Author |
Date Posted |
Forum
|
 |
RE: can I repaint the cooling unit?
They RUST(Corrode) from the INSIDE out. The outside rust is not a factor. Doug
|
dougrainer
|
05/25/12 02:54pm |
Tech Issues
|
|
RE: Bench Testing Dometic 620525 Rooftop AC
I have been studying the schematics and it appears that the thermostat commands compressor run by applying AC voltage to terminal 1 (BLU) of the six wire connector.
It also appears that terminals 2,3, & 4 are for the three fan speeds with terminal 2 (BLK) being high. Terminal 5 is AC neutral and Terminal 6 is Gnd.
Couldn't I bench test the unit by connecting line voltage to the normal input and then introducing line voltage to T1 for comp and T2 for Hi fan? Also AC neutral to T5 and Gnd T6. Using this procedure would also test the control board.
YOUR THE ENGINEER:h I don't have a degree. Just LOTS of training. But NO, the control board is 12 volt operated. Doug (Master Certified RV Technician)
|
dougrainer
|
05/25/12 02:49pm |
Tech Issues
|
|
RE: Bench Testing Dometic 620525 Rooftop AC
I don't advise novices to do this but,
At the module board you will see the compressor relay with a BLUE and BLACK wire on the relay. The BLUE goes to the compressor connect a 120 HOT to that wire. Splice off that hot wire to the small gauge black wire on the control board that has just a spade terminal connected to the board. That is the HI fan speed wire. Connect your White Neutral to the Neutral for the main 120 supply as well as the ground wire to the ground wire. Make SURE you do NOT have these wires still connected to the module board. This will run the fan at hi and the compressor will run. Be advised that a PENGUIN MUST have the top shroud installed if running more than 5 or ten minutes. If you do not install the shroud the compressor will overheat as the shroud MUST be installed to direct the air THRU the condensor. Doug
|
dougrainer
|
05/25/12 12:37pm |
Tech Issues
|
 |
RE: Dometic refrigerator problem
My next question is how do I get to the flue to check if the baffle is in place? I took off the roof vent cover but all I see are cooling fins at the top of the cooling unit.
You have to pull the refer. Doug
|
dougrainer
|
05/25/12 10:48am |
Tech Issues
|
|
RE: Heat Pump Vibration
For some reason the reversing valve vibrates more when heating. If it is really bad and under warranty you may be able to get it exchanged.
I was at the dealer this am and their mechanic term the vibration severe. It will rattle the dishes in the cabinet. I found a small motor home with the same unit in it and it did not have near the vibration. Dealer called Dometic and they said the excessive vibration was normal when it is over 60 degrees outside. I guess the battle has started with Dometic.
Don
1. STATE YEAR MODEL!!!! AND MODEL!!!! THIS is critical to know.
2. You do NOT run a HP when over 60 degrees outside, that increases the HEAD pressure on the compressor as when it is that warm the system cannot remove the heat from the evaporator and the outside condensor (which is cold in HP mode) cannot dissapate the cold because of the ambient heat.
3. NEW 410 freon Dometic model PENGUIN HP's do have a vibration problem. THAT is why year and MODEL is important to this discussion. Doug
|
dougrainer
|
05/25/12 10:46am |
Tech Issues
|
|
RE: norcold control board
WHO told you you need a new board???? That is FALSE. If a RV Tech or Service center told you that or a mobile repair place they are unqualified or LYING to sell you a part.
NO CO is a cooling unit protection shut down. IF you have a problem with the refer cooling down, rear fans inop is the usual cause or you have blocked ventilation or ANYTHING that causes the refer to not progress to a normal cool down cycle, the refer throws a NO CO code. You can turn the refer OFF for 10 seconds and restart. IF YOU DO NOT CORRECT THE REASON IT THREW THE CODE, then it does a 2nd NO CO and locks out the refer. You then have to go to a QUALIFIED RV Technician and find the reason for the NO CO. Once the cause is found and fixed, the Tech nician has the procedure for rebooting the board and removing the NO CO code. Replacing the Board with a new one or a Dinosaur will just result in you spending hundreds of dollars and the refer will still not work. Doug
|
dougrainer
|
05/25/12 06:15am |
Class A Motorhomes
|
|
RE: Heat Pump Vibration
You need to state Brand and Model of HP and year model. Doug
|
dougrainer
|
05/24/12 07:51pm |
Tech Issues
|
|
RE: Getting a refund from Camping World on extended warrenty
Huh???? So I can't come in and ask a question in an effort to prevent a problem? I have to wait till I have one? Let the moderators moderate and ignore just topics you don't want to participate in......
I agree, you do not start a post before you have a problem. I had a warranty from CW Extended Care. traded the MH. received a refund.
Paul, you did NOT ask a question:B
You should have stated, Has anyone had a problem getting a refund from CW for the unused portion of the ESC? There, I posted what you wanted to know:) Doug
|
dougrainer
|
05/24/12 08:53am |
Class A Motorhomes
|
|
RE: Getting a refund from Camping World on extended warrenty
I don't think I have ever heard of anyone ever getting a "refund" from an extended warranty for, well, any product. I do hear all the time about transferring a warranty to a new owner for a fee, that is common.
Very common, but you do NOT get as much back as you might think. Automotive ESC's are different than appliance type ESC's. The reason you do not hear of it is because you usually transfer the ESC to the new owner. Transferring the ESC to the new owner is usually a good selling point. Doug
|
dougrainer
|
05/24/12 06:08am |
Class A Motorhomes
|
|
RE: Dometic refrigerator problem
Does the NDR1292 use a baffle and is it in place? Sometimes if the cooling unit has been changed someone forgets to take it out of the old cooling unit and put in the new one.
Miles
Yes, They ALL use a baffle for the LP flame. What IS the LP pressure? Doug
|
dougrainer
|
05/23/12 02:24pm |
Tech Issues
|
|
RE: connected to shore power full time
You DO need a battery to keep the Power Converter from working too hard. MOST Power Converters need a Load (battery) to regulate its charging and output. As long as you keep the battery water up to the correct level, you should NEVER need to replace that battery for years. NO battery will cause the Power Converter to not last as long. You would be amazed to see how many Power converters we have to replace after a RV show, because we cannot connect batteries while in the show and we run off Power Converter only. Doug
|
dougrainer
|
05/23/12 06:12am |
Tech Issues
|
|
RE: norcold thermostat
NEITHER on a Norcold. That movement is for Dometic refers with a NO SET tstat. They have no adjustable tstat other than moving the Temp Thermister up and down on the fins and THAT type movement only changes the temp by no more than 4 to 5 degrees. The Thermister on your Norcold needs to be in the center of the fin and you adjust by setting the external temp control. If you are having a hard time keeping a good set temp, you have another problem, NOT the placement of the Thermister. Doug
|
dougrainer
|
05/22/12 06:26pm |
Class A Motorhomes
|
|
RE: Help with Norcold 1210 recall parts
They're not available to the public because the factory needs to track the devices that are installed, and where. Since it's a box swap only, it should be a 3 min swap
Norcold requires that BOTH the Thermocoupler AND the box be replaced as we have to send the defective parts back for testing.
The recall boxes are warrantied for life by Norcold. You just have to go to a service center, let them diagnois the problem and then order the new recall box. Some (we do) keep extra recall kits on hand for replacement, while we reorder the new one so you don't have to come back. Doug
|
dougrainer
|
05/22/12 06:08am |
Tech Issues
|
|
RE: Dometic AC Mod 57915.341 Problem
The odds are the Compressor relay on the control board is stuck closed. It is extremely rare for a tstat to cause this type problem. Doug
|
dougrainer
|
05/21/12 06:31pm |
Tech Issues
|
|
RE: Dometic trips GFCI.
"Here's probably what is happening to your reefer. The problem is that many of the heating elements are either exposed or are clad but with open ends. Moisture will impregnate the refractory insulation when the unit is off. When the unit is first powered up, there can be quite high leakage to ground. As the elements heat up, the moisture dries out and the leakage dissipates. Most of this equipment is designed to be hard-wired on a dedicated circuit where any leakage is normally conducted away by the hard-wired ground. The problem arises when such an appliance is corded and operated on a GFCI protected circuit. The initial leakage will trip the GFCI and never allow the unit to warm up enough to quit leaking. Once you switched to a non-GFCI, the moisture burnt off. You may not have a problem now requiring replacing the unit"
Total Nonsense. Yep, it is worth about 2 cents:S Doug
|
dougrainer
|
05/21/12 10:47am |
Tech Issues
|
|
RE: A/C freezing up
If you have wall tstat and ducted system, you cannot freeze up as long as the freeze sensor IS installed in the correct place. It is common for the OEM installers to forget about installing the Freeze Sensor on the evaporator coil. Doug
|
dougrainer
|
05/21/12 10:42am |
Tech Issues
|
|
RE: Ground Fault Keeps Tripping
Do you have a Norcold 1200 series refer? If so, one of the 2 heat elements is your problem. Replace BOTH. Doug
|
dougrainer
|
05/21/12 10:38am |
Class A Motorhomes
|
|
RE: Dometic trips GFCI.
Refer receptacles are NOT required to be on a GFCI circuit. But, due to various wiring on RV's the OEM may use the GFCI feed.
IF the Refer trips a GFCI, then the 120 element is bad. Replace the 120 element. Doug
|
dougrainer
|
05/21/12 06:04am |
Tech Issues
|
|
RE: Comfort Control Setting on Duo Therm a/c
yes, but WHY are you asking the question???? Doug
|
dougrainer
|
05/21/12 06:00am |
Tech Issues
|
|
RE: Where Do the Dead Norcold 1200 Refrigerators Go?
Please post how you bypassed the door heaters.
Thanks
Just tape off the door pins. Without those pins making contac, the door heater will not operate. Doug
|
dougrainer
|
05/21/12 05:56am |
Tech Issues
|
