31
Fault Finding
PROGRAMMER
SLIDERS SET TO
“CONT’ &
THERMOSTATS TO
MAXIMUM
IS THERE 230V AT
CONTROL BOX
TERMINALS 2 & 1 ?
SEE TROUBLE
SHOOTING BURNER
SECTION
HAS OVERHEAT
THERMOSTAT
ACTIVATED
IS THERE 230V
BETWEEN COOKER
OVERHEAT STAT
AND NEUTRAL
REPLACE COOKER
OVERHEAT STAT
RESET OVERHEAT
THERMOSTAT
THERMOSTAT OR
WIRING FAULT
YES
NO
NO
YES
NO
YES
CHANGE
CIRCULATING PUMP
IS CIRCULATING
PUMP OPERATING
SATISFACTORILY ?
CHECK & BALANCE
CH/DHW SYSTEM
CHANGE PUMP
OVERRUN
THERMOSTAT
NO
YES
IS THE PUMP
OVERRUN
OPERATING AT A
WATER TEMP OF
65°C
NO
YES
Summary of Contents for Heatranger 480D
Page 16: ...15 FIG 18 DESN 511140 Replacement of parts Electrical controls ...
Page 27: ...26 Electrical Controls CONTROL CIRCUIT BOILER FIG 35 ...
Page 28: ...27 Electrical Controls CONTROL CIRCUIT COOKER FIG 36 ...
Page 29: ...28 Fault Finding WIRING DIAGRAM BURNER ONLY FIG 37 ...
Page 30: ...29 Fault Finding WIRING DIAGRAM APPLIANCE FIG 38 ...
Page 34: ...33 ...
Page 35: ...34 ...
Page 36: ...35 ...
Page 37: ......