A.O. Smith TWI 45-190 Troubleshooting table for general errors, Symptom, Cause, Solution, Remark

9.2	Troubleshooting table for general errors
	Warning
	Maintenance shall only be carried out by a service and maintenance engineer.
General errors
Symptom		Cause	Solution	Remark
Gas smell		Gas leakage	Warning	Warning
			Immediately close the mains gas supply valve.	Immediately contact the installation engineer or the local gas
				company.
			Warning
			Do not operate any switches.
			Warning
			No open fire!
			Warning
			Ventilate the area the device has been installed in.
Water leakage		Leaking water con-	Tighten the threaded connection.	Contact the installation engineer if the leakage has not been
		nection (thread)		remedied.
		Leakage of conden-	Check if condensate is discharged. Restore this if necessary.
		sate
		Leakage from	Find the leakage.
		another water device
		or pipe nearby
		Leakage of the tank	Consult the supplier and/or the manufacturer.
		of the device
Explosive ignition		Incorrectly set	Set the correct CO2-value(3.11 “Check and adjust the CO2-value”)	Contact the installation engineer if the ignition has not improved.
		CO2-value
		Contaminated burner	Clean the burner (10.4.2 “Clean the burner”).

Instruction manual - TWI 35-130 G/TWI 45-190 G 44