General Boards > Technical Support
Hurricane heater main fuse blowing
Fred Brooks:
Sounds like you had wise parents and now it is your turn, thanks for the kind words!
Thayden Waltonen:
where is the heating thermostat for the hurricane located? We checked the "basement" and did not find it. and is there actually a heating unit for the "basement"?
Fred Brooks:
Thayden, Comfort Hot was an add on system that International Thermal Research (ITR) 800-993-4402 sold to Beavers as a supplemental 120 volt electric heat with 2 heating elements. I am not sure if it is activated by the existing room thermostat or not. I don't know what kind or year your coach is. Hope this helps, Fred
Jim Gillespie:
Thayden, you should have 1 or 2 wall thermostats, maybe side of kitchen wall & near bedroom? 1 will have a remote switch for the Hurricane beside it that has an Off/On switch & a green light & a red light. The basement has a sensor & fan that will come on automatically at a preset temperature whenever either the Hurricane or Comfort Hot is on. There is no thermostat in my basement.
After setting your AC/Heat breaker switches to the Comfort Hot, use your thermostats like you do with the Hurricane but turn off the Hurricane Remote switch. To move air, you will need to turn on the Fan switch(es).
Thayden Waltonen:
--- Quote from: Jim Gillespie on February 21, 2021, 04:13:22 AM ---Thayden, you should have 1 or 2 wall thermostats, maybe side of kitchen wall & near bedroom? 1 will have a remote switch for the Hurricane beside it that has an Off/On switch & a green light & a red light. The basement has a sensor & fan that will come on automatically at a preset temperature whenever either the Hurricane or Comfort Hot is on. There is no thermostat in my basement.
After setting your AC/Heat breaker switches to the Comfort Hot, use your thermostats like you do with the Hurricane but turn off the Hurricane Remote switch. To move air, you will need to turn on the Fan switch(es).
--- End quote ---
Jim,
thanks. found both 'upstairs' thermostats in locations you mentioned (end of kitchen cabinets toward pilot seat and by head of bed, drivers side). Kitchen thermostat controls two fans from fan#1 terminal on hurricane control, orange wire (one under refrigerator and low in center between driver and shotgun–that's cabin heat, not the defrost. Bedroom thermostat controls two fans from fan #2 terminal on hurricance control, yellow wire (fan at foot of bed and under bathroom sink cabinet).
If I turn everything else off and listen quietly I can here fan #3 terminal run a fan somewhere in the 'basement' but still can't find it or maybe the fixed temp bimetal or thermistor that must be attached to the thermostat terminal for fan #3. By sound I would say it is over the waste tanks somewhere (of all inconvenient choices). Maybe there is some way to access it from under a cabinet 'upstairs'? It goes off after the heat has been running for maybe 20 mins and I assume it is designed as an anti-freeze protection for water and waste? It is working so my interest here is knowing for the future.
The Hurricane on/off control next to the kitchen thermostat also remains a mystery. It has no pilot lights and no response to switching on and off. It is connected with ribbon cable but not to the hurricane control board in the heater compartment. The ribbon cable from the control board goes to a similar but not identical hurricane on/off switch in cabinet above entry door and shotgun seat which does work but has no pilot lights. I cannot find the termination of the ribbon cable from the on/off next to the thermostat. I can trace the wire from the trunk leaving the slider into the basement along the inside of the passenger side frame rail and then disappearing over the water tank never to reappear. unlike all other hurricane wiring including the ribbon cable to the high passenger side on/off remote, this ribbon I can't trace after the water tank going forward is not in a harness trunk. it has no additional covering and is ziptied to the trunk coming from the hurricane control board but it doesn't show up at that control board. Not critical as everything works without it but a mystery.
There is a separate "engine heat" switch in the top cabinet rail of the kitchen right under the counter that just turns on the circulator. So if I leave the hurricane switched off over the shotgun seat this switch would provide cabin heat to the fan coils via the heat exchanger from the engine (if the engine is running of course) and the fans still respond to thermostats even if he hurricane itself is switched off.
what i can't figure out is how to work that in reverse to heat the engine from the hurricane. I presume there would need to be some electric circulator on the engine side loop of the heat exchanger to send heat from the hurricane back to the engine because its not going to circulate horizontally that distance on its own and the engine circulation is normally a function of the engine water pump which appears to be mechanically driven only when the engine is running. so it isn't going to be practical to run the engine to heat the engine. I came across a post from a competing high end brand of motor coach RV that indicates it uses an additional electric pump for this purpose but I don't see this detailed anywhere on the Beaver documentation i've found so far. Gotta say the engine starts like a dream in the cold so this is sort of an academic question, although I think it is nicer for the engine to heat it first even if it will start cold; so i'm kinda interested in figuring this out.
Thanks Jim or anyone for any help with his novel i've written.
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