Heat Won't Turn Off???


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Old 12-11-06, 08:56 AM
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Heat Won't Turn Off???

Hi, we have a forced hot water heater (oil burner furnace) we have two zones and our upstairs zone won't shut off. We woke up around 4 this morning cooking! We turned it off but it still keeps cranking. We thought it may be the thermostat so we replaced it, but it's a no go.

The furnace is about 13 years old, all the parts have been replaced. Any solutions?

Thanks!
 
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Old 12-11-06, 02:37 PM
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Wink

Check and see if you have a pump on or zone valve for that zone that is on.
 
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Old 12-11-06, 02:59 PM
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Originally Posted by Lorizh
all the parts have been replaced.
_ALL_ of the parts ? Why ?

Can you be more specific as to what was replaced ?
 
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Old 12-13-06, 07:59 AM
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Originally Posted by Lorizh
Hi, we have a forced hot water heater (oil burner furnace) we have two zones and our upstairs zone won't shut off. We woke up around 4 this morning cooking! We turned it off but it still keeps cranking. We thought it may be the thermostat so we replaced it, but it's a no go.

The furnace is about 13 years old, all the parts have been replaced. Any solutions?

Thanks!
The relay on my old White Rodgers Relay–Hot Water Control 843a-30 was starting to stick everytime the t'stat called for heat. This was causing the circulating pump to run constantly. Because the pump was running constantly, the burner was coming on to maintain the low limit temperature and wasting quite a bit of gas. I replaced it with a Honeywell Aquastat Relay L8124A and everything works fine.
 
 

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