Majestic · Gas fireplace

1 RED-GREEN / 2 sec Pilot lockout - flame loss

High severity DVBL7 Signature Command

What the control is telling you

The pilot flame went out during running and three relight attempts failed. Alternating red-green flash every 2 seconds until reset.

Applies to: 300DVBLN/PSC7, 400DVBLN/PSC7, 500DVBLN/PSC7 (Signature Command)

Likely causes

Pilot flame too high or too low
Sensor out of the flame
Flue gases leaking back into the system

Test and repair steps

Turn the master switch OFF, then ON again to reset
Clean and adjust the pilot flame and sensor position
Check the vent pipe, cap and joints for leaks or blockage

Other codes on the same units

1 GREEN / 2 sec Pilot lockout - trial for ignition
1 RED Conversion cover missing
1 RED / 10 sec Low battery
1 RED / 2 sec (until reset) Pressure switch failure (power vent only)
2 BEEPS Double beep (confirmation)
2 RED Spark fail
2 RED / 10 sec No or low thermopile power
3 RED No sensor signal

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Source: Majestic DVBL7 Series Installation and Operating Instructions, p. 41, p. 47. Summarized in our own words; check the original manual for your model.

Homeowner looking at this code? See what it means for you and when to call a technician.

For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.