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All installations and services must be performed by qualified service personnel.
43
SET THERMOSTAT TO CALL FOR HEAT
(MAKE CERTAIN ROOM TEMPERATURE IS BELOW THERMOSTAT SETTING)
CHECK INPUT POWER,
DOOR INTERLOCK,
SERVICE SWITCH
AND FUSES
IS THERE 120 VOLTS
ACROSS "L1" AND
"NEUTRAL" AT THE
50V61-143 CONTROL
MODULE?
IS THE INDUCER
BLOWER OPERATING?
IS THERE 24 VOLTS
ACROSS "TH" & "TR"
AT THE INTEGRATED
CONTROL MODEL
50V61-143?
CHECK 115 VOLT
CONNECTIONS. IF OK,
REPLACE TRANSFORMER
YES
NO
YES
YES
NONO
IS THERE 24V
ACROSS R AND B/C
CHECK FUSE ON
W/R 50V61-143
NO
IS THERE 24 VOLTS
ACROSS "R" AND "W1"?
CHECK WIRING TO
THERMOSTAT. IF OK,
REPLACE THERMOSTAT.
YES
NO
IS THERE LINE VOLTAGE
ACROSS INDUCER POWER
TERMINALS "IND HI" TO
"IND N" OR "IND LO" TO
"IND N" AT THE 50V61-143
CONTROL?
CHECK WIRING TO INDUCER
AND IF OK, REPLACE
INDUCER ASSEMBLY.
YES
REPLACE THE
50V61-143 CONTROL.
YES
NO
TROUBLESHOOTING GUIDE
THE SYSTEM IS STARTED BY SETTING THE THERMOSTAT TO CALL FOR
HEAT. THE FOLLOWING SHOULD HELP ESTABLISH THE TYPE OF
MALFUNCTION OR DEVIATION FROM THE NORMAL OPERATION.
NOTE: IF LED LIGHT IS FLASHING, REFER TO PAGE 34 FOR A QUICK TROUBLESHOOTING GUIDE.
TO USE THIS DIAGRAM, YOU JUST NEED TO FOLLOW THE INSTRUCTIONS IN THE BOXES.