SOLVED: No power getting to the thermostat
SOLVED: It was a short somewhere between the blue wires at the furnace and the tstat. Refer to this post Hi All, 1997 Terry 30g RV with an Atwood 8531-III DCLP furnace and a Coleman 7300 air con...
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That On/Off CB Switch has 3 wires
RED and BLUE on one terminal and then RED on other terminal
RED/Blue....red is 12VDC + from DC Dist Panel (FUSED)
Blue sends 12VDC+ to the thermostat
RED on other side goes to Timed Delay Relay.
When Thermostat closes then 12VDC+ goes to coil side of Timed Delay Relay which allows the 12VDC+ on RED to go to Fan Motor
So you should have 12VDC + on RED/Blue at the On/Off Switch and on the RED from Switch to the Time Delay Relay (Green Box)
Yellow is NEG/Ground
RED and BLUE on one terminal and then RED on other terminal
RED/Blue....red is 12VDC + from DC Dist Panel (FUSED)
Blue sends 12VDC+ to the thermostat
RED on other side goes to Timed Delay Relay.
When Thermostat closes then 12VDC+ goes to coil side of Timed Delay Relay which allows the 12VDC+ on RED to go to Fan Motor
So you should have 12VDC + on RED/Blue at the On/Off Switch and on the RED from Switch to the Time Delay Relay (Green Box)
Yellow is NEG/Ground
