Haram P61 burning hot

[SteveMcCarthy69]

I have 2 Harman P61 pellets stoves. One of the stoves is way hotter then the other when idling. I have the thermostat set as low as it can go on both stove so both stoves are essentially idling with a very minimal flame. If I measure the temperature on the side of one stove it is 160F. The temperature on the other stove in the same spot is 290F.

I have had this stove for 25 years and do all of the cleaning an maintenance on it myself. I can't figure this one out. It feel like there is too much airflow in the stove causing the pellets to burn really hot.

This is what I have tried so far.

I have cleaned the stove completely,
Cleaned the inside of the burn pot.
Cleared all the holes in the burn pot.
Replaced the ESP.
Replaced the door casket.
swapped room temperature probes between the 2 stoves.
swapped the doors between the 2 stoves.
I tried different feed rate settings, it is set at 3 now.

 

[Tonyray]

you have mentioned everything except brand/type of pellets which i assume are same for both stoves..

 

[Whitenuckler]

I have 2 Harman P61 pellets stoves. One of the stoves is way hotter then the other when idling. I have the thermostat set as low as it can go on both stove so both stoves are essentially idling with a very minimal flame. If I measure the temperature on the side of one stove it is 160F. The temperature on the other stove in the same spot is 290F.

I have had this stove for 25 years and do all of the cleaning an maintenance on it myself. I can't figure this one out. It feel like there is too much airflow in the stove causing the pellets to burn really hot.

This is what I have tried so far.

I have cleaned the stove completely,
Cleaned the inside of the burn pot.
Cleared all the holes in the burn pot.
Replaced the ESP.
Replaced the door casket.
swapped room temperature probes between the 2 stoves.
swapped the doors between the 2 stoves.
I tried different feed rate settings, it is set at 3 now.

Do the flames look the same? Do they have OAK? Are the combustion fans set for the same minimum vacuum?

 

[SteveMcCarthy69]

I use Wood Pellet Co. Premium Hardwood pellets in both stoves. I have been using the same brand for 25 years now.

 

[SteveMcCarthy69]

Do the flames look the same? Do they have OAK? Are the combustion fans set for the same minimum vacuum?

I will have to take a close look at the flames when I get home. Neither stove uses an outside air kit. I don't know about the combustion fans set for the same minimum vacuum. Is there any type of adjustment for that?

 

[Whitenuckler]

I will have to take a close look at the flames when I get home. Neither stove uses an outside air kit. I don't know about the combustion fans set for the same minimum vacuum. Is there any type of adjustment for that?

Yes there is an adjustment POT near the igniter light on the newer control card and the instructions are in one of the manuals.
Do you think it's partly due to the stove's location? Does one have colder air it's drawing in or located in a cooler room?