Furnace Fan Only Mode?
Hello All, Starting to prepare for my first winter in my trailer and have been thinking about heating. I am full timing right now and would like to use electric as my primary heat source to save my...
Forum Discussion
wrvond wrote:Gdetrailer wrote:
Rigging the furnace fan could be done, basically would need to add a 12V SPDT (Single Pole Double Throw) relay in between the fan motor and the control board. The relay basically selects between the control board or direct 12V to the fan motor. Then a simple toggle switch can be used to turn the relay on for bypass.
Completely unnecessary if your thermostat has a 'fan only' position.
:R
Boy, you REALLY showed me...
Umm.. IF the OP of this thread HAD that SAME systems and T-Stat, they WOULD NOT HAVE POSTED their question in this thread in the first place.
In the second place, for your information, the MAJORITY of RVs DO NOT USE the type of T-stat you posted. That system COSTS MORE so most manufacturers opt for the SIMPLER HEAT ONLY T-Stat which does not have a fan only option or A/C control.
Besides even with the T-Stat you posted, it DOES NOT TURN ON the furnace fan (which IS what the OP is asking about). It only turns on the AC FAN. While one could simply turn on the A/C to fan only and circulate the air that way, it doesn't address the OP's concerns of getting heat to the HOLDING TANKS while not running the propane furnace.
I will stand by my original post on how to make the change AND as to why I know that it is not a good idea to make this change.
