Dometic fridge woes.
I have a Dometic model RM2453 3-way fridge that works in all 3 modes but the LP mode is a problem. It always ignites and burns clean. However I don't believe that the flame is hot enough. I've always ...
Forum Discussion
1. The Correct way to verify the LP pressure is at the Port just behind the Orifice. THAT will tell you if the Tstat is allowing the full 11.5 inches WC to the burner. When in BYPASS mode the Pressure will drop to Pilot flame pressure.
2. FILTER A filter is located in the inlet fitting to the thermostat. The filter can become saturated and cause a restriction to gas flow. If you suspect a restriction, first verify the thermostat and bypass screw are good. THERMOSTATLP GAS MODE The thermostat is calibrated by the manufacturer so that at mid-range the cabinet temperature should be approximately 40 degrees Fahrenheit. To check the calibration of the thermostat, place a container of water in the cabinet of the refrigerator and operate at mid-range setting until the thermostat is satisfied. Check the temperature of the water. It should be approximately40 degrees. To check the thermostat for proper g a s flow, set the thermostat to maximum and check the gas pressure at the pressure test port. It should be line pressure, between water column. If you have less than 11 inches of water column pressure, the next step would be to shut off the gas supply and remove the bypass screw. Then install a bypass screw that does not have the small o-ring on it. Next, turn on the gas supply and take a reading. If the manometer now reads 11 inches of water column, the thermostat is defective and must be replaced. If the bypass screw test shows no change in pressure, the problem lies in the filter, the shut-off valve or the gas supply.
3. Since you have replaced the tstat, That FILTER is what I would suspect is the problem. Also, are you POSITIVE that you did not kink or break the Metal Sensor Cappillary tube that runs to the Evaporator fins? If it loses its gas charge it will cause your type problem.
2. FILTER A filter is located in the inlet fitting to the thermostat. The filter can become saturated and cause a restriction to gas flow. If you suspect a restriction, first verify the thermostat and bypass screw are good. THERMOSTATLP GAS MODE The thermostat is calibrated by the manufacturer so that at mid-range the cabinet temperature should be approximately 40 degrees Fahrenheit. To check the calibration of the thermostat, place a container of water in the cabinet of the refrigerator and operate at mid-range setting until the thermostat is satisfied. Check the temperature of the water. It should be approximately40 degrees. To check the thermostat for proper g a s flow, set the thermostat to maximum and check the gas pressure at the pressure test port. It should be line pressure, between water column. If you have less than 11 inches of water column pressure, the next step would be to shut off the gas supply and remove the bypass screw. Then install a bypass screw that does not have the small o-ring on it. Next, turn on the gas supply and take a reading. If the manometer now reads 11 inches of water column, the thermostat is defective and must be replaced. If the bypass screw test shows no change in pressure, the problem lies in the filter, the shut-off valve or the gas supply.
3. Since you have replaced the tstat, That FILTER is what I would suspect is the problem. Also, are you POSITIVE that you did not kink or break the Metal Sensor Cappillary tube that runs to the Evaporator fins? If it loses its gas charge it will cause your type problem.
