Takagi Combi Boiler Error Codes
Takagi tankless and combi units display a three-digit code on the controller. Note the code before calling.
This is not a DIY repair
Combi boilers are gas-fired appliances regulated under the BC Safety Standards Act. Opening the unit, touching the gas valve, or working on the flue without a valid BC gas-fitter licence is both unsafe and illegal. Diagnosing the fault is helpful — fixing it should always be left to a certified technician.
Call 778-909-5731Takagi fault codes (10)
111UrgentIgnition failure.121UrgentFlame loss / combustion failure.311ModerateOutlet thermistor fault.321ModerateInlet thermistor fault.331UrgentExhaust thermistor fault / over-temp.510UrgentGas solenoid valve fault.611UrgentCombustion fan fault.701UrgentGas solenoid circuit fault.721UrgentFlame sensing circuit fault.991UrgentCombustion abnormality / venting.