Troubleshooting guide
Dometic CCC2 fan only or no cooling by mode and zone
Dometic CCC2 operating instructions separate FAN mode from COOL mode: FAN Low/Med/High runs the fan continuously, FAN Auto is off, and cooling only calls when room temperature is above the cooling setpoint in the selected zone.
Use this atlas to identify likely meaning and prepare for service. Shut off power, LP gas, fuel, or water when a listed appliance condition involves flame, gas smell, exhaust, generator shutdown, high temperature, moving jacks/slides, refrigerant, 120 VAC, control boards, repeated ignition failure, or a persistent lockout. Call the appliance maker, RV dealer, or a qualified RV technician for repair.
Owner-safe checklist
- Wake the CCC2 display from normal buttons and confirm the selected zone.
- Select COOL mode instead of FAN mode before judging a no-cooling call.
- Confirm the room temperature is above the cooling setpoint and the fan setting is Auto, Low, Med, or High as intended.
- Wait through the normal cooling delay, then call qualified RV HVAC service if the selected zone requests cooling but does not cool.