Potential Cause (Technical Use Only: Potential remedy):
OT3 open (if fitted – located on burner cover). Check switch – if open, button will click when pressed.
Ignition cable damaged or disconnected. Check ignition lead – re‐connect or replace if required.
Incorrect spark gap. Check spark gap between ignition electrode and burner face – adjust to 3‐4mm if required.
Incorrect test point pressure. Check pressure at outlet pressure test point on gas valve – compare with value specified on data label.
Incorrect gas supply pressure to heater. Check supply pressure at inlet pressure tapping on gas valve with heater on max and all other gas appliances running. -NG – minimum 1.13 kPa. -Propane – minimum 2.75 kPa. Check gas meter regulator outlet pressure and fitting line size and length.
Gas supply turned off at gas meter, heater isolation valve or gas valve on/off switch. Check gas supply – turn on if required.
ICS not detecting flame – ignition occurs but gas off after approx. 7 seconds. Check flame sense lead is connected at ICS. Check flame sense lead is not damaged or shorted – replace if required. Check flame sense gap – should be 4‐ 6mm from flame sense electrode to burner face. Check flame sense electrode is clean – clean with steel wool or replace if required.
For Braemar Ecostar TQ, TQM, TQS, TQMD, BMQ Gas Ducted Heaters and Braemar Supernova TQS Gas Ducted Heaters.