Truma Trumatic E 1800 Space Heater
The Trumatic-e 1800 is a liquid petroleum gas (L.P.G.) heater with electronic control and built-in air distribution, designed for installation inside or outside vehicles and boats. It provides efficient heating with adjustable power levels, integrated thermostat, and fan ventilation functions.
View official manual on manufacturer's site ↗Technical Specifications
Master Troubleshooting & Diagnostics Matrix
| Error Code / Indicator | Symptom / Meaning | Possible Cause | Step-by-Step DIY Fix | Suggested Actions |
|---|---|---|---|---|
FAIL (red control light) - Continuous light | Gas supply failure, air in the gas pipe, a dirty fan, or a fault in the safety system. | — | Turn the heater off and back on to clear the fail light. | DIY Safe |
FAIL (red control light) - Blinking | Indicates low electrical supply voltage. | — | Check the vehicle electrical supply and battery voltage. | DIY Safe |
OPERATING (green control light) - Off when switched on | Indicates that the fuse in the electrical control panel has blown or power is not reaching the unit. | — | Replace the fuse in the electrical control panel (the heater's installation instructions show where it is). | DIY Safe |
Red indicator lamp "Fault" (Continuous illumination) | Indicates a lack of gas, air in the gas line, a dirty burner/blower, or a safety device defect. | — | Switch off and on again to retry starting. If the red light stays on, have the system checked by a professional technician. | DIY Check / Tech Fallback |
Electronics failure | The control board has been potted and cannot be repaired. | — | Replace with original Truma replacement board (do not use non-original replacement plates). | DIY Safe |
Frequently Asked Questions
Q: How do I start the heater?
Take the cowl cap off if there is one, turn on the gas at the bottle, open the isolating valve, set the room temperature you want on the control unit's knob, and put the left-hand switch to HEAT (setting 1 or 1/2).
Q: What should I do if the red FAIL light illuminates continuously?
A steady light means a gas supply failure, air in the gas pipe, a dirty fan, or a fault in the safety system. Switching the heater off, then back on, clears it.
Q: How often must the gas installation be checked?
Every two years, a competent fitter has to re-check the gas installation and record it on a DVGW G 607 or G 608 test certificate.