We have a Lennox G26 propane furnace.
The gas valve gets solid >24vac and the ignitor ignites the gas. It stays burning for about 10 sec. then goes out.
A few seconds later, the gas valve solenoid closes.
This eliminates any issues with the controls (pressure sensor, flame sensor, temp sensors, etc.)
It HAS to be a problem with the supply from the propane tank or the valve inside the furnace. (also, I replaced the flame sensor already thinking that was the problem... it didn't fix it)
The initial blue flame used to last 10-15sec. yesterday. Today and only lasts 5sec. Each attempt after that only lasts 1sec.
Then after 3 attempts, the controls shut off and give a "burners won't ignite" error code.
Our tank is 500gal and about 4 months old. It is buried and has ~new regulators at the tank and at the house.
The gas company came out yesterday and installed a new regulator at the house. The furnace worked for ~20min.
Then when he left, the furnace shut off again and hasn't started since..
The gas company and a furnace company have both been out and they both say it's each others fault.
Gas says they are supplying the house fine, furnace says the gas supply chokes off after the gas line is being consumed.
The gas company is coming out again though, so hopefully they can check the pressure everywhere while the furnace is running to see where the problem is.
This is the coldest it has been this year, so that could have sparked the issue.
In my head, here are the possible problems:
1. bad regulator on outside tank
2. pinched or cracked gas line
3. bad regulator valve in furnace
4. out of gas (even though the tank reads 30%)
5. ???
Does anyone have any advice? What could likely be the problem?
The furnace has been working for the last 3 months and this just started happening 2 days ago.
Thank you for any help!
The gas valve gets solid >24vac and the ignitor ignites the gas. It stays burning for about 10 sec. then goes out.
A few seconds later, the gas valve solenoid closes.
This eliminates any issues with the controls (pressure sensor, flame sensor, temp sensors, etc.)
It HAS to be a problem with the supply from the propane tank or the valve inside the furnace. (also, I replaced the flame sensor already thinking that was the problem... it didn't fix it)
The initial blue flame used to last 10-15sec. yesterday. Today and only lasts 5sec. Each attempt after that only lasts 1sec.
Then after 3 attempts, the controls shut off and give a "burners won't ignite" error code.
Our tank is 500gal and about 4 months old. It is buried and has ~new regulators at the tank and at the house.
The gas company came out yesterday and installed a new regulator at the house. The furnace worked for ~20min.
Then when he left, the furnace shut off again and hasn't started since..
The gas company and a furnace company have both been out and they both say it's each others fault.
Gas says they are supplying the house fine, furnace says the gas supply chokes off after the gas line is being consumed.
The gas company is coming out again though, so hopefully they can check the pressure everywhere while the furnace is running to see where the problem is.
This is the coldest it has been this year, so that could have sparked the issue.
In my head, here are the possible problems:
1. bad regulator on outside tank
2. pinched or cracked gas line
3. bad regulator valve in furnace
4. out of gas (even though the tank reads 30%)
5. ???
Does anyone have any advice? What could likely be the problem?
The furnace has been working for the last 3 months and this just started happening 2 days ago.
Thank you for any help!