Brivis Error Code 68 Secondary Valve Fail: During Heating, the secondary valve control relay is not detected as closed.
For Heater Repair Tech Only
Reason: While the secondary valve control relay should be energised its contact is detected as opened by the primary microcontroller. Once the “FLAMEDETECT” state is entered the secondary valve control relay contact state is continuously monitored by the primary microcontroller until the “OFF” state of the heating cycle is entered as is illustrated in the flow chart of FIG 8-5.3.1c. If the secondary valve control relay contact is unexpectedly detected as opened by the primary microcontroller a lockout condition (Code#63) is registered by the primary microcontroller forcing the heating cycle into the “OFF” state. Service Check List: For a first time Error 68 reset NG-2 Module then retry heater operation. Clean the flame sensor Clean the Ignitor spark plug Check the flame sensor location is correct See Flame Sensor servicing section in this manual (Do not reposition the flame sensor in the flame) Check and adjust the gas pressures which include Burner pressure, Minimum Burner pressure and Ignition Burner pressure. Check the gas valve loom and rectifier plug. Check the gas valve. Also See Errors: 46, 47, 49 and 50