Heat & Glo Gas Fireplace: Fireplace with PVK-80 power vent: flames lifting or jumping

Fireplace with PVK-80 power vent: flames lifting or jumping on a Heat & Glo gas fireplace: Flame tuning on a Heat-N-Glo DSI fireplace with the PVK-80 power vent; also covers the short delay before ignition.

Homeowner with a gas fireplace problem? Call (647) 657-2977 or book a service call — licensed technicians across Vaughan and the GTA.

Applies to: Heat-N-Glo DSI fireplaces with PVK-80 power vent (Fenwal, RAM-1-RS, RAM 1MC1 systems)

Common causes of fireplace with pvk-80 power vent: flames lifting or jumping

• Exhaust control lever opened too far (tall, lifting, ghosting flames)
• Exhaust control closed too far (short, active, jumping flames)
• No 120 VAC at the fireplace junction box
• Power vent plugged into the wrong receptacle (RAM-1-RS uses AUX, not REM)

How to fix fireplace with pvk-80 power vent: flames lifting or jumping: step by step

1. CAUTION: Disconnect power to the fireplace before any work on the power vent.
2. A short delay before ignition is normal: the fan has to reach speed and purge the firebox first.
3. The power vent needs 120 VAC at the fireplace junction box. On RAM-1-RS units it plugs into AUX, not REM. Match wire colors on the terminal block.
4. Start with the exhaust control lever closed. Short, active, jumping flames: open the lever slightly and recheck until flames are steady.
5. Tall, lifting, floating or ghost-like flames: the lever is open too far; close it until that stops.
6. When flames are right, lock the lever to the housing with the sheet-metal screw and leave the setting alone.
7. PVK-80 is for DSI fireplaces only; standing-pilot (millivolt) units cannot use it, and no other appliance may share the vent.

If the unit shows an error code, look it up: Heat & Glo Gas Fireplace codes

Models

CFX-DAGrand-50-CRAM-1-RSRAM 1MC1-01RAM 1MC1-05