What to do if your Munchkin Control Board is faulty?
Vent Temperature Limit Exceeded. Push the red reset button on the switch. Check the flue temperature during operation using a combustion analyzer. Replace the switch if faulty. Interrupted or Shorted Supply (Outlet) Thermister. Check the electrical connection to the thermister on the outlet manifold. Replace thermister if necessary.
How to check High Limit Exceeded in Munchkin boiler?
High Limit Exceeded. Assure that there is adequate flow through the boiler by accessing the status menu and assuring that there is less than a 50°F rise from the return thermister to the supply thermister. Check thermister reading on supply thermister.
How to check circulation pump on Jupiter Munchkin?
Some codes and remedies may vary slightly depending on model and version. Check circulation pump operation. Assure there is adequate flow through the boiler by accessing the status menu and assuring there is less than a 50°F rise from the return thermistor to the supply thermistor.
When to use red jumper wire on Munchkin?
For early Munchkin units without a Blocked Vent Pressure Switch, this will trigger a FLU error because the switch is not present. Therefore, permanently use the red jumper wire to jump this function. Not sure if you have this switch?
Vent Temperature Limit Exceeded. Push the red reset button on the switch. Check the flue temperature during operation using a combustion analyzer. Replace the switch if faulty. Interrupted or Shorted Supply (Outlet) Thermister. Check the electrical connection to the thermister on the outlet manifold. Replace thermister if necessary.
Why is there an error code on my Munchkin?
An error code may occur in the installation of the Munchkin. This condition may lead to a lock out condition of the controller, which will need to be manually reset through the S4/Reset button. These temporary codes will help the installer correct the problem before going into a lock out condition, which will require a manual reset.
How to check the circulation of a Munchkin boiler?
1. Check circulation pump operation. 2. Assure that there is adequate flow through the heater by accessing the status menu and assuring that there is less than a 50°F rise from the return thermister to the supply thermister. Return (Inlet) Temperature Exceeded 230°F. 1. Check circulation pump operation. 2.
Some codes and remedies may vary slightly depending on model and version. Check circulation pump operation. Assure there is adequate flow through the boiler by accessing the status menu and assuring there is less than a 50°F rise from the return thermistor to the supply thermistor.
