5
Trouble-shooting
20
Blue Seal Evolution Series GT45 / GT46 / GT60
©
Moffat Ltd, January 2007
Revision 1/
Figure 5.2.3b
Thermostat or Gas control faulty
With cold fryer, disconnect thermostat wires from
gas control and check continuity through
thermostat. If no continuity rotate shaft
anti-clockwise one full turn to check if the ther-
mostat is out of calibration. If there is still no
continuity then replace the thermostat.
If there is continuity through the thermostat
connection then set gas control knob to main
flame position. Check millivolts generated by the
thermopile across terminals TP and TH (middle
and RH connection). A minimum of 150mV is
required to hold gas valve open. If a greater
value than this is obtained but the main burner
will not come on then the gas valve is faulty–
replace. If less than 150mV is obtained (and the
thermopile is ok—refer earlier section) then the
thermostat is faulty– replace.
