Vsp3−1 Board - Lennox G32V Series Service Literature

2− VSP3−1 Blower Control Board G32V−4 Units
COOLING MODE
END OF COOLING TEST
HEATING MODE
END OF TEST
DOES UNIT OPERATE?
YES
IS 24VAC ACROSS
R AND C?
PLACE JUMPER ACROSS R, G, AND Y1.
IS BLOWER ON LOW SPEED AND IS ON/
OFF LED−DS3 AND HI/LOW LED−DS1 LIT?
CFM LED−DS4 LIGHT SHOULD BLINK
ONCE FOR EVERY 100 CFM SELECTED IN
THE TABLES ON PAGE 2.
IS 24 VOLTS PRESENT AT J73
PIN 12 ON VSP3 BOARD?
IN ADDITION TO R G, AND Y1
JUMPER R AND Y2.
YES
IS BLOWER ON HIGH SPEED AND ARE DS1 AND
DS3 LIT? DOES THE CFM LED−DS4 LIGHT BLINK
ONCE FOR EVERY 100 CFM SELECTED IN THE
TABLES ON PAGE 2?
DOES UNIT OPERATE?
YES
IS 24VAC ACROSS
PLACE HTG. BLOWER JUMPER IN POSITION #2.
PLACE JUMPER ACROSS R AND W1. WAIT 75
SECOND FOR PREPURGE AND FAN ON DELAY.
IS BLOWER ON LOW SPEED AND IS ON/OFF"
LED−DS3 LIT? CFM" LED−DS4 LIGHT SHOULD
BLINK ONCE FOR EVERY 100 CFM SELECTED IN
THE TABLES ON PAGE 2.
IS 24 VOLTS PRESENT AT J73
PIN 12 ON VSP3 BOARD?
PLACE HTG. BLOWER
JUMPER IN POSITION #1.
R AND W1 REMAIN JUMPERED.
DOES BLOWER SHIFT TO HIGH SPEED
AND IS HEAT" LED−DS2 ON? DOES THE
CFM" LED−DS4 LIGHT BLINK ONCE
FOR EVERY 100 CFM SELECTED IN
THE TABLES ON PAGE 2?
REMOVE JUMPERS
YES
AFTER THE SELECTED
TIME, DOES BLOWER
TURN OFF?
CHECK:
NO
NO 1−UNIT POWER
2−INTERLOCK SWITCH
3−TRANSFORMER
4−LIMIT SWITCH
YES
YES
NO
YES
NO
R AND C?
YES
NO
YES
NO
YES
NO
YES
NO
Page 82
NO
CHECK UNIT WIRING AND IF
CORRECT, REPLACE VSP3−1.
REPLACE VSP3−1.
NO
CHECK UNIT WIRING
AND IF CORRECT
REPLACE THE
VSP3−1.
CHECK:
1−UNIT POWER
2−INTERLOCK SWITCH
3−TRANSFORMER
4−LIMIT SWITCH
1−CHECK UNIT WIRING AND IF
CORRECT, REPLACE
2−BREAK AND REMAKE JUMPER
VSP3−1.
(R TO W1).
3−AFTER 30−35 SECOND PURGE,
IS 24VAC PRESENT AT GAS
VALVE?
REPLACE VSP3−1.
CHECK UNIT WIRING
AND IF CORRECT,
REPLACE VSP3−1.
REPLACE THE VSP3−1.