Propane Furnace - Service and/or Repair

[bigdog]

My Propane furnace seems to be constantly running and not sure why ?
Stats: Trans 90 XL (90k BTU output)

Gas service tech checked furnace and nothing appears to be wrong, all 3 gas jets firing OK.

The thing is the zone thermostat (Honeywell( indicates the tempperature is set at 67 degrees, however, the room temperature reading indicates 65 degrees.
Consequently the furnace never shuts down because it is constantly calling for heat to reach the thermostat setting.

New batteries were installed in 'all' house thermostats.

Do you think I have a bad thermostat ?

Thanks,
BD

[Kamper]

BD....

Maybe. Do they have access to the rooms air flow? If they are blocked, they may never reach the right temperature. Most thermostats are easy to change but multi-zones might need a tech to get them to function in harmony.

[fatlazyless]

If all else fails, call the propane expert, call www.christianrepair.com for a propane-911 service call .... what you should have done in the first place.


Plumbing & cHeating; what happens when you call the plumber to fix a heating problem. You get cHeated. What you want is a heating technician. The plumbers don't call it 'Plumbing and cHeating' for nothing.

[Phantom]

Thanks for the recommendation FLL ….. been looking for someone to run a routine maintenance check on our Rinnai direct vent propane heaters. As they are a Rinnai dealer - they may be just the ticket I have been looking for. Foley., whom we used in the past- dropped this service.

[songkrai]

Originally Posted by fatlazyless

If all else fails, call the propane expert, call www.christianrepair.com for a propane-911 service call .... what you should have done in the first place.

Nope. Response from this guy was slow. Then nothing.

[swnoel]

Originally Posted by bigdog

My Propane furnace seems to be constantly running and not sure why ?
Stats: Trans 90 XL (90k BTU output)

Gas service tech checked furnace and nothing appears to be wrong, all 3 gas jets firing OK.

The thing is the zone thermostat (Honeywell( indicates the tempperature is set at 67 degrees, however, the room temperature reading indicates 65 degrees.
Consequently the furnace never shuts down because it is constantly calling for heat to reach the thermostat setting.

New batteries were installed in 'all' house thermostats.

Do you think I have a bad thermostat ?

Thanks,
BD

This is common when a furnace is under fired. It might say 90K btu's on the tag, but if the gas line is too small it will only allow whatever the line size does. Have you ever had problems in cold weather before? Could be the thermostat, is it a programmable? Is this a zoned system... check the dampre and make sure it's opened all the way.

[BroadHopper]

Not sure how big your unit is, but Riannai suggest 150k unit for my 1100 sq ft condo with 2 full baths. It includes on demand hot water and 2 zones baseboard heat. It is a condensing boiler so the thermostat is set to go off and on at .1 degree +-. It appears to be running constantly but runs efficiently at that setting. A 30% fuel savings after replacing a conventional boiler. Savings calculation include compensation for temperature variance.

When the boiler is in 'away' mode. The temperature is set to 40". Also the baseboard circulator is constantly running to avoid freezing the pipes. Maybe that is what you are experiencing?

Originally Posted by bigdog

My Propane furnace seems to be constantly running and not sure why ?
Stats: Trans 90 XL (90k BTU output)

Gas service tech checked furnace and nothing appears to be wrong, all 3 gas jets firing OK.

The thing is the zone thermostat (Honeywell( indicates the tempperature is set at 67 degrees, however, the room temperature reading indicates 65 degrees.
Consequently the furnace never shuts down because it is constantly calling for heat to reach the thermostat setting.

New batteries were installed in 'all' house thermostats.

Do you think I have a bad thermostat ?

Thanks,
BD