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10-09-2018, 07:33 PM
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#1
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Junior Member
Join Date: Mar 2018
Posts: 17
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Furnace won’t start
I have a 2015 coachman pursuit KB 27. I Tried to start the gas furnace today. The furnace does not come on. I made sure the switch was reset inside the cabinet and I have 14 volts going to the board but I don’t know if it’s coming out of the board. There is also a hum coming from the motor. Any suggestions.
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10-09-2018, 08:00 PM
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#2
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Senior Member
Join Date: Jan 2015
Posts: 442
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Quote:
Originally Posted by Therig2
I have a 2015 coachman pursuit KB 27. I Tried to start the gas furnace today. The furnace does not come on. I made sure the switch was reset inside the cabinet and I have 14 volts going to the board but I don’t know if it’s coming out of the board. There is also a hum coming from the motor. Any suggestions.
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is there propane getting to the furnace
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haven a blast
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10-09-2018, 08:00 PM
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#3
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Site Team
Join Date: Mar 2014
Location: Grayson County, Texas
Posts: 21,587
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Quote:
Originally Posted by Therig2
I have a 2015 coachman pursuit KB 27. I Tried to start the gas furnace today. The furnace does not come on. I made sure the switch was reset inside the cabinet and I have 14 volts going to the board but I don’t know if it’s coming out of the board. There is also a hum coming from the motor. Any suggestions.
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You need more than a hum from the blower. The blower has to turn fast enough to close your "sail switch" or the control board won't open the gas valve and fire the furnace. Maybe your blower motor has seized up.
__________________
2015 FR Wildcat 295RSX / GMC Sierra
Nights Camped: '13 = 49/'14 = 74/'15 = 74/'16 = 85/'17 = 110/'18 = 111/'19 = 86/'20 =108/'21 = 115/'22 = 135/'23 = 78; Booked for 2024 = 69 |
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10-09-2018, 08:01 PM
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#4
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Senior Member
Join Date: Mar 2014
Location: Mountain Foothills of Southern Alberta
Posts: 2,005
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The fan is not turning that is why you hear the motor humming.
How long ago was the furnace working properly, days, weeks, months?
If it was quite a while ago there could be a mud dauber nest stopping the fan from turning.
__________________
2007 Surveyor SV230 - 200 Watts Solar/MPPT Controller - 220 AH Battery Bank (Two-GC2) - 600 watt PSW Inverter - (2) 2000 watt Inverter Generators - LED Lighting
2009 F150 - 5.4 Litre with Tow Package
Boon Docking 99% of the time.
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10-09-2018, 08:29 PM
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#5
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Junior Member
Join Date: Mar 2018
Posts: 17
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The squirrel cage turns freely
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10-09-2018, 08:36 PM
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#6
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Junior Member
Join Date: Mar 2018
Posts: 17
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It still should still try to light if it doesn’t have gas.
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10-09-2018, 08:55 PM
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#7
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Pickin', Campin', Mason
Join Date: Aug 2015
Location: South Western PA
Posts: 19,152
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Quote:
Originally Posted by Therig2
It still should still try to light if it doesn’t have gas.
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It won't even try to light if the blower fan doesn't run fast enough to move the sail switch.
__________________
2022 Cedar Creek 345IK 5th Wheel•Solar & Inverter•2024 Ford F-Series SCREW•7.3L•4x4•Factory Puck•B&W Companion•TST Tire Monitor w/Repeater•Sinemate 3500w Gen.
F&AM Lodge 358 Somerset, PA - JAFFA Shrine - Altoona, PA
Days Camped ☼ '19=118 ☼ '20=116 ☼ '21=123 ☼ '22=134 ☼ '23=118☼ '24=90
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10-16-2018, 02:51 PM
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#8
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Member
Join Date: Jan 2013
Location: Morrisville
Posts: 37
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Not really an answer, but a similar problem
I have a 2013 Solera 24 MS with a Suburban furnace (not certain of the model it is one of the SF-xxXQ series). Worked fine for most of the last 5+ years. The other night I went to sleep out in the rig and I went out and started the furnace. Ran fine, warmed up the rig and everything. Sometime, during the night it stopped starting and has not started again. Things tried:
1) Tun system off, wait 5 min, try again. All I get is one click from the furnace
2) Unplug and disconnect batteries, try again after reconnecting. All I get is one click from the furnace
3) turn all off and wait 24 hrs. All I get is one click from the furnace.
Once during this series, it started for 5 minutes and stopped, had not reached temp setting, it just stopped. Then nothing but one click from the furnace when I set the Dometic TStat to a temp warmer than the coat temp. Winter camping season, followed by Florida in Jan is coming and I need the furnace.
Clues, Thoughts, Ideas, Snarky comments??
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10-16-2018, 03:02 PM
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#9
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Pickin', Campin', Mason
Join Date: Aug 2015
Location: South Western PA
Posts: 19,152
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Quote:
Originally Posted by lmacy
I have a 2013 Solera 24 MS with a Suburban furnace (not certain of the model it is one of the SF-xxXQ series). Worked fine for most of the last 5+ years. The other night I went to sleep out in the rig and I went out and started the furnace. Ran fine, warmed up the rig and everything. Sometime, during the night it stopped starting and has not started again. Things tried:
1) Tun system off, wait 5 min, try again. All I get is one click from the furnace
2) Unplug and disconnect batteries, try again after reconnecting. All I get is one click from the furnace
3) turn all off and wait 24 hrs. All I get is one click from the furnace.
Once during this series, it started for 5 minutes and stopped, had not reached temp setting, it just stopped. Then nothing but one click from the furnace when I set the Dometic TStat to a temp warmer than the coat temp. Winter camping season, followed by Florida in Jan is coming and I need the furnace.
Clues, Thoughts, Ideas, Snarky comments??
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When you say "just stopped" you mean totally?
During those 5 minutes, did it light and start to blow warm air and then the the blower quit or did the burner stop and continued to blow?
It sounds like you have a blower issue. (see my post above yours) If the blower doesn't run, none of the next several chain of events that need to take place for the furnace to light, can happen. If the blower stops in mid-stream, the burner stops burning. It is a fail-safe built into the furnace.
The blower issue could be low voltage, mouse nest/debris in the fan, bad motor, etc.
__________________
2022 Cedar Creek 345IK 5th Wheel•Solar & Inverter•2024 Ford F-Series SCREW•7.3L•4x4•Factory Puck•B&W Companion•TST Tire Monitor w/Repeater•Sinemate 3500w Gen.
F&AM Lodge 358 Somerset, PA - JAFFA Shrine - Altoona, PA
Days Camped ☼ '19=118 ☼ '20=116 ☼ '21=123 ☼ '22=134 ☼ '23=118☼ '24=90
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10-16-2018, 03:39 PM
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#10
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Member
Join Date: Jan 2013
Location: Morrisville
Posts: 37
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Quote:
Originally Posted by 5picker
When you say "just stopped" you mean totally?
During those 5 minutes, did it light and start to blow warm air and then the the blower quit or did the burner stop and continued to blow?
It sounds like you have a blower issue. (see my post above yours) If the blower doesn't run, none of the next several chain of events that need to take place for the furnace to light, can happen. If the blower stops in mid-stream, the burner stops burning. It is a fail-safe built into the furnace.
The blower issue could be low voltage, mouse nest/debris in the fan, bad motor, etc.
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It ran like normal for 5 min. Put out warm air, then everything stopped, blower, burner. Nothing but a single click. I'll check your earlier post.
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