Daikin Kombi Error 11 67 points directly to a gas valve malfunction that stops ignition and heating. The fix starts with verifying electrical connections to the valve then replacing the assembly if solenoid resistance falls outside specifications. Technicians complete this repair in under two hours once the unit is isolated from power and gas supply.
Daikin Kombi Error 11 67 Gas Valve Feedback Loss
When your Daikin Kombi boiler shows error 11 67 the problem usually stems from lost feedback signals at the gas valve. This malfunction stops proper ignition and demands step by step checks on the valve wiring and control board. Resolving the feedback loss restores reliable operation without unnecessary part replacements.
Technicians encounter Daikin Kombi Error 11 67 when the control board detects no feedback from the gas valve during startup sequences. The boiler locks out to prevent unburned gas release and displays the code on the main panel.
Multiple resets without addressing the valve itself will repeat the fault within minutes of each ignition attempt. Homeowners notice cold radiators and no domestic hot water alongside the error code.
| Symptom | Primary Suspect | Difficulty 1-5 |
|---|---|---|
| No flame after spark | Gas valve solenoid | 3 |
| Intermittent lockout | Loose valve wiring | 2 |
| Error returns after reset | Faulty gas valve | 4 |
Daikin Kombi Gas Valve Failure Causes
The gas valve on a Daikin Kombi receives a 24 volt signal from the main board yet fails to open when the solenoid coil has burned out or the internal seat sticks. Corrosion on the spade connectors disrupts the circuit and produces the same code without any mechanical failure inside the valve body.
Low incoming gas pressure can mimic the symptom but registers on the manometer before the valve is condemned. Checking these items in order prevents unnecessary part replacement.
Daikin Kombi 11 67 Gas Valve Isolation
When addressing the Daikin Kombi error 11 67 that signals a gas valve malfunction, technicians begin by isolating the valve to pinpoint its role in the fault. This requires shutting off the gas supply and disconnecting electrical connections while monitoring system responses. Such steps confirm whether the valve needs replacement or if another component is involved.
Isolate the boiler by turning off the electrical breaker and closing the gas cock. Remove the front cover and locate the gas valve assembly below the burner.
Disconnect the two electrical plugs and label each wire position. Unscrew the inlet and outlet unions while supporting the pipework to avoid strain.
Install the new gas valve with fresh seals and torque the unions to manufacturer specification. Reconnect the wiring harness and restore power for a test cycle.
Daikin Kombi Gas Valve Solenoid Test
To diagnose the gas valve malfunction shown by error 11 67 on a Daikin Kombi boiler, perform a solenoid test on the valve assembly. The test measures coil resistance and checks for proper electrical response when power is applied. Results determine if the solenoid has failed or if the issue lies elsewhere in the gas control circuit.
Measure resistance across the solenoid terminals with a multimeter set to ohms. A healthy coil reads between 800 and 1200 ohms depending on the exact Daikin series.
Readings near zero indicate a shorted winding while open circuit confirms coil failure. Record the value before ordering a replacement to confirm the diagnosis matches the error code.
Daikin Kombi Gas Valve Inlet Pressure
In diagnosing the gas valve malfunction indicated by error 11 67 on a Daikin Kombi boiler the inlet pressure requires careful evaluation. Technicians measure this pressure to determine if low gas flow prevents proper valve operation. Such checks distinguish between supply issues and internal valve defects for effective resolution.
Attach a manometer to the inlet test point on the gas valve with the boiler off. Open the gas cock and note static pressure which must sit near 20 millibar for natural gas.
Fire the boiler and observe working pressure which should remain above 17 millibar during ignition. Low readings point to a supply issue rather than the valve itself.
Daikin Kombi 11 67 Fault Clearance
When addressing the Daikin Kombi 11 67 fault the focus remains on resolving gas valve malfunctions that interrupt heating performance. Clearance requires systematic checks of valve connections along with targeted resets to restore proper function. These steps target the root cause without introducing unnecessary risks to the system.
Power cycle the boiler after the gas valve replacement and wait for the display to clear. Enter the service menu if the code persists and clear the fault history stored in the control board.
Run a full heat demand cycle and confirm the burner lights within five seconds of the fan reaching speed. Monitor for three consecutive cycles without lockout before returning the unit to normal operation.
Daikin Kombi Data Plate Valve Matching
Source the correct gas valve for the specific Daikin Kombi model number located on the data plate. Confirm the part carries the same connection orientation and voltage rating as the original. Install only after pressure testing the gas circuit for leaks with soapy water.
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