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I have a honeywell furnace that the fan blows but theres no hot air. it stays at 58 when i have it set to 70. The burners are cooled and weve tried restarting the gas and theres still nothing. the model number we have is sv9500m
Jennarose061, Do you have plenty of fuel (gas)? Do you smell any gas? If you have fuel, then it sounds like your Ignition Control Module may be at fault or if your gas regulator is a 24VAC type, then check for 24VAC at the electrical wires supplying the gas regualator.
Jennarose061, Do you have plenty of fuel (gas)? Do you smell any gas? If you have fuel, then it sounds like your Ignition Control Module may be at fault or if your gas regulator is a 24VAC type, then check for 24VAC at the electrical wires supplying the gas regualator.
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The sv9500m units are notorius for having cracks in the solder connections where the 4 wire plug socket attaches to the board in the gas valve. A short term fix or test is to apply pressure to the wiring by twising it, then try a relight. If it works you have a loose solder connection. To repair this (you assume all liability- there is no room for oops here)- remove 2 small security torx screws holding the plastic cover on. Remove only the half of the cover with the on/off switch sticking though it. It should just lift off. you may have to move it around a little no forcing. The solder spots are now accessable. check & resolder the connections where the 4 wire main connector hooks to the board- put the cover back on & test it. done.
Well first off honeywell does not make furnaces.all a home owner should do when dealing with any type of troubleshooting is what the manufactorer tells them to do in owners manual.heating systems can be very simple or complex but all have the potential to go boom so if your not sure call a professional
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Does the furnace stays off?. Furnace are ment to cycle on and off because of limits .If you set to 70 furnace would cycle several times before reaching that temperature. Just make sure your filters are clean and you got proper return air flow because lack of air flow will cause furnace to shut off sooner than normal
Yes, depending on exactly what you mean by furnace on. Many furnace fans react only when plenum temprature reaches a certain amount.... (helps keep from blowing cold air) The circulation fan can run several times after burner shoutdown, based on the temp....
Yes. If the high limit is tripped, the furnace will bring on the fan continuously until the limit resets. Often, they will not reset if tripped repeatedly. If the furnace is too large for your application, you probably are not able to move enough air to keep the heat exchanger cool enough.
not familiar with that particular model but on virtually every type and style of furnace i have worked on in the last 21 years. the fan is delayed. usually the burner lights then 3 to 5 minutes later after the heat exchanger has gotten nice and hot the fan comes on and blows nice and hot air. on old furnaces there was and is a switch usually on the upper right side of the furnace bulkhead that has a spring like device that heats up and rotates till it makes a set of contacts that turn the fan on. if it gets to hot the set of contacts breaks the power to the gas valve and shuts down the burner. as the furnace cools down on shut off there is a third set of contacts that open to turn off the fan so you don't get a draft. sometimes the stat can be wired up wrong, and it will bring the fan on right away ,and air will be cool and drafty till furnace catches up.
Jennarose061, Do you have plenty of fuel (gas)? Do you smell any gas? If you have fuel, then it sounds like your Ignition Control Module may be at fault or if your gas regulator is a 24VAC type, then check for 24VAC at the electrical wires supplying the gas regualator.
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