Covers: Autoquest APEX, Avalon, Avalon Evolve
+2 more
Whirlwind GT, Whirlwind GT EvolveWhirlwind GT models: 105, 115, 120, 150, 155, 185, 194, 196, 196+
Whirlwind GT Evolve models: 105, 115, 120, 150, 155, 185, 194, 196, 196+
Autoquest APEX models: 105, 115, 120, 150, 155, 185, 194, 196+
Avalon models: 250, 255, 285, 295
Avalon Evolve models: 250, 255, 285, 295
Elddis Heating
(Motorhome, 2026 Model Year)
Also Fitted To This Caravan
Master Troubleshooting & Diagnostics Matrix
| Error Code / Indicator | Symptom / Meaning | Possible Cause | Step-by-Step DIY Fix | Suggested Actions |
|---|---|---|---|---|
1 | Inadequate gas supply on Whale Heat Control (Space Heater) | — | Check the gas supply, confirm it's running at 30mbar LPG, then press and hold both buttons at the bottom of the dial (the flame and lightning-bolt icons) together for 3 seconds to clear the lockout. | DIY Safe |
2 | Overheat on Whale Heat Control (Space Heater) | — | Check the air vents and ducts aren't restricted, wait 10 minutes for the heater to cool, then press and hold both buttons at the bottom of the dial (the flame and lightning-bolt icons) together for 3 seconds to clear the lockout. | DIY Safe |
3 | Inadequate supply voltage on Whale Heat Control (Space Heater) | Supply voltage outside 10.5 - 15.9V d.c. range (heater inoperable under 10.1V) | Ensure voltage is between 10.5 and 15.9V d.c. If outside this range, press and hold both buttons at the bottom of the dial (the flame and lightning-bolt icons) together for 3 seconds to clear the lockout. | DIY Safe |
4 | Flue blockage on Whale Heat Control (Space Heater) | — | Check the flues for any blockages, then press and hold both buttons at the bottom of the dial (the flame and lightning-bolt icons) together for 3 seconds to clear the lockout. | DIY Safe |
5 | Internal fault on Whale Heat Control (Space Heater) | — | Ring Whale Support first (the number is +44 (0)345 9090 911; European customers should check the enclosed Webasto Service information instead), then hold down both buttons at the base of the dial - the flame and lightning-bolt icons - together for 3 seconds; the warning icon becomes a checkmark once the lockout clears. | DIY Check / Tech Fallback |
6 | Control panel fault on Whale Heat Control (Space Heater) | — | Power the unit off, then power it back on. | DIY Safe |
7 | Multiple faults on Whale Heat Control (Space Heater) | — | Power the heater off, check it over for recurring faults, power it back on, then press and hold both buttons at the bottom of the dial (the flame and lightning-bolt icons) together for 3 seconds to clear the lockout. | DIY Safe |
1 | Whale Heat Control Panel shows fault type #1, meaning the water heater's gas supply is inadequate | — | Check the gas supply itself first, switching to propane instead of butane if it's below 5°C outside, then inspect the flue for any blockage. Finish by holding the two buttons at the base of the dial - flame and lightning-bolt - together for 3 seconds, which turns the warning icon into a checkmark once the lockout's cleared. | DIY Safe |
2-3 | Fault type #2-3 - Overheat Fault on Whale Heat Control Panel (Water Heater) | — | Make sure the heater's completely topped up with water, then run the pump for a while with just one hot tap open until the flow's steady, and finish by holding both dial buttons - the flame and lightning-bolt icons - down together for 3 seconds; the warning icon turns into a checkmark as the lockout clears. | DIY Safe |
4 | Whale Heat Control Panel shows fault type #4 - a low voltage fault on the Water Heater | Supply voltage outside 10.5 - 15.9V d.c. range (heater inoperable under 10.1V) | Ensure voltage is between 10.5 and 15.9V d.c. If outside this range, press and hold both buttons at the bottom of the dial (the flame and lightning-bolt icons) together for 3 seconds to clear the lockout. | DIY Safe |
5 | Whale Heat Control Panel shows fault type #5 - an air pressure fault on the Water Heater | — | Check the flues for blockages, then press and hold both buttons at the bottom of the dial (the flame and lightning-bolt icons) together for 3 seconds to clear the lockout. | DIY Safe |
6-11 | Fault type #6-11 - Internal Fault on Whale Heat Control Panel (Water Heater) | — | Hold both buttons at the base of the dial - the flame and lightning-bolt icons - together for 3 seconds so the warning icon turns into a checkmark as the lockout clears; if the fault's still there, Whale Support's number is +44 (0)345 9090 911. | DIY Check / Tech Fallback |
12 | Fault type #12 on Whale Heat Control Panel (Water Heater) | — | Power the heater off, check it for recurring faults, power it back on, then press and hold both buttons at the bottom of the dial (the flame and lightning-bolt icons) together for 3 seconds to clear the lockout. | DIY Safe |
N/A | Truma Solar Charge Controller (MPPT5025A-DUO-BT): 'Batt Low' LED illuminated | Main battery voltage is below 10.5 volts - caused by a discharged battery, insufficient battery connection, or a failed supply fuse. | Check the battery connection and supply fuse, and recharge or replace the battery as needed. | DIY Safe |
N/A | Truma Solar Charge Controller (MPPT5025A-DUO-BT): '>80%' LED flashing once per second | The charge controller has over-heated. | Allow the charge controller to cool - ensure it has adequate ventilation and is not covered or obstructed. | DIY Safe |
N/A | Truma Solar Charge Controller (MPPT5025A-DUO-BT): '>80%' LED flashing twice per second | The main battery or solar panel is experiencing an overvoltage condition. | Check the solar panel and battery wiring for a fault. Contact your dealer or an authorised service centre if the issue persists. | DIY Check / Tech Fallback |
N/A | Truma Solar Charge Controller (MPPT5025A-DUO-BT): all LEDs flashing | The wrong battery type has been selected on the charge controller's DIP switches. | Check the battery type DIP switches on the underside of the charge controller and set them to match the battery actually fitted. | DIY Safe |
Frequently Asked Questions
Q: How do I operate the water heater drain valve?
The drain valve sits close to the water heater's upper section, right beside where the hot and cold water lines connect in. A quarter-turn of its yellow lever, clockwise, is all it takes to operate it.
Q: How do I clear a lockout on the Whale Heat Control Panel?
Press and hold both buttons at the bottom of the dial (the flame and lightning-bolt icons) together for 3 seconds - the warning icon changes to a checkmark once the lockout's cleared.