Error Code h01 46: No Flame on Ignition. During an ignition attempt the flame signal is not detected within the flame detect time interval and the maximum attempts at flame detection during ignition have not been exceeded.
Brivis Error Code 46 No Flame on Ignition: During an ignition attempt the flame signal is not detected within the flame detect time interval and the maximum attempts at flame detection during ignition have not been exceeded.
For Heater Repair Tech Only
Reason: This is a result of no flame being sensed by the flame sensor during the flame detect time interval of 4.5 seconds. A re-ignition will occur provided that the number of re-ignition attempts does not exceed 5 in a row. After 5 attempts an Error 50 will be logged and an Ignition Lockout will occur. Service Check List: Start up the heater and check for ignition. If ignition occurs and the heater losses flame within 4.5 seconds, then check the following: During ignition check if the burner flame ignites, but is not confirmed by the flame sensor (A flame symbol is displayed on the NG-2 LCD when flame is sensed). If the flame is not detected by the NG-2 control, then check the following: • Check for correct connection of the flame sensor to the burner assembly and NG-2 control. • Check for a satisfactory flame from the burner above the flame sensor. • Check for continuity between the flame sensing rod and the lead connector. • Check the flame sensor rod is located in the correct location as specified in Section 5.4. • Check for correct ignition burner pressure as specified in Section 4.1 and adjust if required. • Check power supply polarity is correct. • Check the voltage to the gas valve is maintained (i.e. 24Vac) at back of NG-2 gas valve loom plug. A faulty connection may shut off the gas valve. • Check the heater has been set for the correct gas type on the NG-2 bridge link. • Clean the flame sensor rod and retry ignition.
If ignition does not occur then check the following • Check for sparking during the ignition process. Ensure that the spark canister is generating a spark signal and there is spark across the ignitor spark gap. • Check the gas supply is turned ON at the gas meter, and the appliance gas cock. • Check the gas cylinders have gas, and the cylinder valve is open (LPG only). • Check that the inlet gas pressure is sufficient during ignition (at least 800 Pa for ignition). • Check that the burner pressure during ignition is within specification and adjust if necessary according to the procedure in section 4.1. • If the correct burner pressure can not be achieved: • Ensure that the gas valve main coils and modulating coils are receiving sufficient voltage. If not then check the gas valve loom and connection on the NG-2. • Check the gas valve coil resistances are within specification: Gas Valve Modulating Coil maximum current NG: 115 mA LPG: 160 mA Modulating coil winding resistance @ 20°C 82 – 88 Ω Main Coil winding resistance @ 20°C Coil 1: 32.98 – 35.02 Ω Coil 2: 16.49 – 17.51 Ω • Check the air has been purged from the gas service piping. • Check to make sure that the spark gap and location of the ignitor is within specification as described in Section 4.3. If the error can not be eliminated after performing the above checks, then it may be possible that there is a fault with the gas valve or NG-2 control, and they should be changed individually to prove this.