Nu-Flame Vitesse H.E. Use, Installation & Servicing Instructions page 25

21.6 - POOR FLAME PICTURE
a. Check the supply pressure is correct at the isolation elbow. If the pressure is low, check gas pipe sizing, quality of pipe bending.
Check for debris in the gas supply and or gas filter if fitted.
b. All Control Systems have a pressure point to allow the Burner Pressure to be checked. On the Manual Control it is
visible at the front left of the control.
On the Thermatronic it is present at the Front, the left pressure tapping on the Control. On the High Level Control it is on the left
of the Control, the rear pressure tapping. You may wish to check 'c' first.
c. Check that another appliance is not affecting the gas supply pressure.
d. Check there is not a flue/ventilation problem – carry out a spillage test.
e. Check fuel bed layout as detailed in Section 17.
21.7 - FIRE OPERATES FOR A WHILE THEN GOES OUT
a. Check the supply pressure is correct at the isolation elbow with all other gas appliances working. If the pressure is low or
fluctuating up and down check gas pipe sizing, quality of pipe bending. Check for debris in the gas supply, pilot pipe and or gas
filter if fitted.
b. Carry out a spillage test from cold. Look for signs of Discoloured Walls or Trims as this may be an indication of a Downdraught
Problem.
c. Establish how long the fire stays alight then repeat the Spillage Test around this time.
d. For a Thermatronic System check that the Control is functioning correctly as detailed in 21.2 specifically the Thermocouple
Electrical Connections and Pilot Flame size.
Downdraught problems can be related to the condition of the flue, chimney termination or geographical location and so
if a Flue Problem is thought likely but no problem is found during the investigation isolate the fire and seek expert
advice.
21.8 - THERMATRONIC RADIO FREQUENCY CONTROL SYSTEM DOES NOT OPERATE
a. Check the radio frequency control is being correctly operated - see section 2.4
b. Check for error messages and check batteries - see section 2.5
c. Reset the Mertik Maxitrol Logic Circuits - see section 2.6
21.9 - HIGH LEVEL PUSH BUTTON CONTROL DOES NOT OPERATE
a. Change the batteries then see if the push buttons now operate.
b. The Switch and Receiver/Battery Box should be replaced.
Important : In instances where it is indicating that the main control system needs changing, (specifically the 3 Button High
Level or Thermatronic Control Systems), you should investigate returning the whole Burner Control Assembly to Nu-Flame for
rectification as this could be the least cost option.
ALWAYS CONDUCT A GAS SOUNDNESS AND SPILLAGE CHECK AFTER SERVICING.
ALWAYS RESEAL THE PRESSURE TEST POINT AND CHECK THAT IT IS GAS TIGHT. (This accounts for a lot of recalls.)
ALWAYS CHECK THAT THE GLASS IS CLEAN AND FREE FROM FINGERPRINTS. (This accounts for a lot of recalls).
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