DOMETIC AC SWITCHING BACK AND FORTH BETWEEN HEAT AND AIR

RECREATION wrote:
Is there some way to by pass the solonoid and just use the cooling side.

NO, because it takes POWER from the control board to energize for cooling. This is one reason Dometic changed the default to COOL and it takes power to energize for HEAT. If the system malfunctions/fails at least it will still COOL. The odds are, as I stated the coil is bad, so there is no way to force it to stay ON. Doug