Majestic · Gas fireplace

1 RED / 10 sec Low battery

Low severity DVBL7 Signature Command

What the control is telling you

Single red flash every 10 seconds while running on battery power.

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

Likely causes

Backup batteries are weak
Batteries installed with wrong polarity

Test and repair steps

Replace the four AA batteries
Check polarity of each cell
Replace batteries at least once a year even if no warning

Other codes on the same units

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

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Source: Majestic DVBL7 Series Installation and Operating Instructions, p. 41, p. 39. 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.