13
Service Facts
M952-SF-4
Trouble Shooting Kit
TROUBLESHOOTING ECM-2™ MOTOR
WITH TROUBLESHOOTING CIRCUIT BOARD
AND 4 WIRE TEST CABLE
ECM-2™ TROUBLESHOOTER KIT
Order P ub. No. 34-3403-0
1
Purpose:
Verify proper signals are being received by the motor control board and are being
sent to the ECM-2™ Motor by the 16 wire low voltage motor harness.
1. Turn power off
2. Disconnect all low voltage field wiring, set all dip
switches to “OFF.”
3. Disconnect the 16-pin connector at the ECM-2™
Motor. Plug in the “Troubleshooter” to the
harness.
4. Turn on power.
5. The troubleshooter “R” L.E.D. on the board should
be on.
6. If the troubleshooter “R” L.E.D. is not on, check for
24 volts A.C. at the motor control board.
7. If 24 volts A.C. is not present, troubleshoot and
repair as needed.
8. If 24 volts A.C. is present, check the trouble shooter
“R” L.E.D. and check continuity of the 16 wire
cable, pin 1 to pin 1, through pin 16. If
troubleshooter “R” L.E.D. is good and 16 wire
cable pin #1 and pin #12 are good, repair or
replace motor control board.
9. The green “C.F.M.” L.E.D.’s should be flashing on
the motor control board and troubleshooting
board. If the green CFM L.E.D. on the motor
control board does not flash, check the
troubleshooter “CFM” L.E.D. and continuity of the
16 wire harness, pin #8 and #16. If
troubleshooter “CFM” L.E.D. and harness are
good, replace motor control board.
Summary of Contents for M952V060BD36AB
Page 7: ...7 Service Facts M952 SF 4 M952 WIRING DIAGRAM From drawing D345191P01...
Page 8: ...8 Service Facts M952 SF 4 M952 SCHEMATIC DIAGRAM2 From drawing D345191P01...
Page 9: ...9 Service Facts M952 SF 4 M952 WIRING DIAGRAM From drawing D345192...
Page 10: ...10 Service Facts M952 SF 4 M952 SCHEMATIC DIAGRAM From drawing D345192...
Page 37: ...37 Service Facts M952 SF 4...
