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Troubleshooting

The chart assumes that the proper gas and pressure is available to the heater. The chart also assumes that the heater is used in accordance with Mr. Heater installation and operating instructions.
Problem Observed Possible Cause Solution
Burner lights but goes out when safety control valve is released No flame. Regulator going bad. Replace.
    Thermocouple not located correctly in burner or connection to safety valve loose. Align or finger tighten connection than 1/4 turn more.
    Thermocouple defective. Replace.
  Pilot goes out. Pilot light not properly adjusted. Adjust pilot on gas valve per manual.
Burner goes out Blue flame floating around burner Regulator going bad. Replace.
    Dirt or bugs in venturi. Clean with low pressure air and pipe cleaner 30psi.
Burner flame is yellow Unit smoking Dirty gas burner or line. Clean all holes and tubing.
    Low gas pressure. check supply or regulator.
IF SERVICE IS REQUIRED
For information regarding service, please call our Toll-Free Number: 1-800-251-0001. Our office hours are 8:30 a.m. - 5:00 p.m., Eastern Time Zone, Monday through Friday. Please include the model number, date of purchase, and description of problem in all communication.
WARRANTY
Mr. Heater warrants Mr. Heaters and accessories to be free from defects in material and Workmanship for a period of 1 year from date of purchase. Mr. Heater will repair or replace this Product free of charge if it has been proven to be defective within the 1 year period, and is Returned at customer expense with proof of purchase to Mr. Heater within the warranty period.
IF SERVICE IS REQUIRED
For information regarding service, please call our Toll-Free Number: 1-800-251-0001. Our office hours are 8:30 a.m. - 5:00 p.m., Eastern Time Zone, Monday through Friday. Please include the model number, date of purchase, and description of problem in all communication.


TROUBLESHOOTING
Original Series Tank-Top Heaters
Big Buddy
Big Max
Portable Buddy
Convection Heaters
Forced Air Kerosene Heaters
Forced Air Propane Heaters
Garage / Shop Heaters
Patio Heaters
Radiant Portable Heater (Model MH35LP)
Radiant Portable Heater (Model MH125LP)
Tube Heaters