Thermostat not getting 12v
Hey guys, first post just recently started full timing in a 2004 KZ inc. New Vision 34’ 5th wheel. Everything worked great until last week, the a/c started short cycling and the LP leak detector start...
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There are 4 wires at furnace. The RED should have 12 volts. THAT then feeds 12 volts to one of the Blue wires. Check that red wire and report back. IF the red has 12 volts, jumping the 2 Blue together will start the furnace. Disconnect the Blue's to stop the furnace. You had tested previously. The BLACK going to the RED should have 12 volts. CHECK the 12 volt fuses in the Breaker box where the 120 breakers and the ATC fuses are. 1.8(lower than 12 volts) volts is sometimes the result of a LOOSE 12 volt ATC fuse in the fuse block. Do your ceiling lights operate with normal brightness? Doug
