If your caravan fridge isn’t cooling properly, won’t switch modes, or is showing an error light, a reset is often the first and simplest fix — especially for Dometic and Thetford models.
Fridge control boards can lock up after:
- Power interruptions
- Mode switching (240V ↔ gas)
- Long storage periods
- Low voltage or gas faults
This guide explains how to reset a caravan fridge safely, what a reset actually does, and when resetting won’t solve the problem.
What You’ll Learn
- When a fridge reset is worth trying
- How to reset Dometic caravan fridges
- How to reset Thetford caravan fridges
- Gas vs electric reset differences
- When a reset won’t fix the issue
This guide is suitable for all caravan owners, including beginners.
What Does “Resetting” a Caravan Fridge Mean?
A reset:
- Clears temporary faults
- Reboots the control board
- Forces the fridge to re-check power and gas inputs
It does not repair:
- Faulty heating elements
- Blocked gas burners
- Failed control boards
- Cooling unit failures
Think of it like restarting a computer — useful, but not magic.
Step-by-Step: How to Reset a Caravan Fridge
1. Turn the Fridge Completely Off
Start at the fridge control panel.
- Switch the fridge off, not just to standby
- Ensure no lights or indicators remain on
Wait at least 60 seconds before continuing.
2. Power Cycle the Fridge (Electric Reset)
This clears most electronic faults.
- Turn off 240V power at the caravan
- Switch off the 12V supply (or battery isolator)
- Leave power off for 5–10 minutes
This allows capacitors in the control board to fully discharge.
3. Reset Gas Mode (If Applicable)
If the issue is gas-related:
- Turn off the gas supply at the bottle
- Wait 1–2 minutes
- Turn gas back on slowly
- Restart fridge in gas mode only
This helps clear air from the gas line and resets flame detection.
4. Restart the Fridge and Select Mode
After power is restored:
- Turn fridge back on
- Select one mode only (240V or gas)
- Avoid AUTO mode initially
- Monitor for fault lights or error codes
Allow at least 30 minutes to confirm proper operation.
Resetting Dometic Caravan Fridges
Most Dometic models:
- Use electronic control panels
- Reset via full power cycle
- May show flashing LEDs or fault codes
If a fault reappears immediately after reset, it’s usually a hardware issue, not software.
Resetting Thetford Caravan Fridges
Thetford fridges often:
- Require longer power-off periods
- Are sensitive to low 12V voltage
- Lock out gas mode after repeated failures
Ensure battery voltage is healthy before attempting reset.
When a Reset Won’t Fix the Problem
Resetting will not fix:
- Fridge that works on 240V but not gas
- Blocked burner jets
- Failed heating elements
- Cooling unit ammonia issues
- Persistent error codes
Repeated resets without diagnosis can make issues worse.
Common Mistakes to Avoid
- Not turning all power sources off
- Restarting too quickly
- Switching modes during reset
- Ignoring low battery voltage
- Assuming reset = repair
If a reset works once but fails again, there’s an underlying issue.
Key Takeaways
- Resets clear temporary electronic faults
- Power cycling is the most effective reset
- Gas resets help after storage
- AUTO mode should be avoided initially
- Repeated faults need diagnosis
Next Steps
If your fridge works on 240V but not gas:
👉 Caravan Fridge Works on 240V but Not Gas? Diagnosis Guide
If vents may be blocked:
👉 How to Clean Caravan Fridge Vents Properly
For ongoing faults:
