Pellet stove thermister or ESP

Pellet stove thermister or ESP

PostBy: pelletzzz On: Tue Apr 23, 2013 8:24 pm

SO my pellet stove is acting up...
I had replaced my old esp probe with a new one and that seemed to help the problem although not 100%
Right now it randomly shuts off the feed rate is not adjustable and the blower fan comes on randomly not when the stove is hot.
I have found that moving around the probe activates the stove.
More specifically when the probe touches a piece of metal on the stove it starts feeding pellets.
I confirmed this but removing it and touching grd in a receptacle.
The question is can this be the probe failing where its internal insulation broke down so that its touching the probe casing itself thus causing malfunctions to the stove.
Whenever I tighten the probe all the way in its respectful location the stove shuts off completely.
pelletzzz
 
Stove/Furnace Make: Harman
Stove/Furnace Model: P38

Re: Pellet stove thermister or ESP

PostBy: Wiz On: Tue Apr 23, 2013 9:00 pm

Normally probe just needs to be clean using windexs glass cleaner. Have you clean exhaust pipe behind the ash pan. How old is probe? Check probe wires for possible damage. Is red default status light blinking?
Wiz
 
Stoker Coal Boiler: Keystoker Ka 6
Coal Size/Type: Casey Junk Coal :(

Re: Pellet stove thermister or ESP

PostBy: coalnewbie On: Tue Apr 23, 2013 9:11 pm

Ah the P38 my nemesis - a total POS but you can make it function. I know I have one (P38+). Firstly, are the leads to the new ESP red or black and are they the same color as the one you replaced? Two different thermocouples and no I have never cleaned the thermocouple with glass cleaner - ever - I really can't follow that one - but the exhaust channel needs to be clean obviously. I can give you chapter and verse on this stove series but let's keep it simple and that way my ulcer medication won't have to be renewed. From your response I can estimate if you blew the main board which I don't think you did. Anyway welcome to our little board and we will try to help you. The circuitry is similar to the DVC which is a coal stove but I think I have mine tamed after 5 faultless years, now even as I uninstall it for other reasons. I have been infected with the base burner virus which you don't have to know or care about but is the only reason I switched stoves (it's a silly coal board thing). When that little stove of yours is crankin' with good pellets (and that is really the trick) it can really spew out some heat. So let's get this resolved for you. LOL.
Last edited by coalnewbie on Tue Apr 23, 2013 9:17 pm, edited 2 times in total.
coalnewbie
 
Hot Air Coal Stoker Stove: LL AnthraKing 110K, Pocono110K,KStokr 90K, DVC
Hand Fed Coal Stove: Hitzer 50-93, Jotul 507
Baseburners & Antiques: Red Cross Invader 2
Coal Size/Type: Rice, Chestnut
Other Heating: Heating Oil CH, Toyotomi OM 22


Re: Pellet stove thermister or ESP

PostBy: Wiz On: Wed Apr 24, 2013 6:17 am

I've got a pc45 and service manual states to remove probe from exhaust and wipe it off with glass cleaner. Been doing it for 7 years with no issue and still the orginal probe.
Wiz
 
Stoker Coal Boiler: Keystoker Ka 6
Coal Size/Type: Casey Junk Coal :(

Re: Pellet stove thermister or ESP

PostBy: coalnewbie On: Wed Apr 24, 2013 7:02 am

Fine, then wipe the probe with glass cleaner and after that does nothing let's resume this thread.
coalnewbie
 
Hot Air Coal Stoker Stove: LL AnthraKing 110K, Pocono110K,KStokr 90K, DVC
Hand Fed Coal Stove: Hitzer 50-93, Jotul 507
Baseburners & Antiques: Red Cross Invader 2
Coal Size/Type: Rice, Chestnut
Other Heating: Heating Oil CH, Toyotomi OM 22

Re: Pellet stove thermister or ESP

PostBy: Wiz On: Wed Apr 24, 2013 7:14 am

coalnewbie wrote:Fine, then wipe the probe with glass cleaner and after that does nothing let's resume this thread.

Fine :drunk:
Wiz
 
Stoker Coal Boiler: Keystoker Ka 6
Coal Size/Type: Casey Junk Coal :(