ComCo Systems Inc. | 800.533.3794 | www.comcosystems.com
500628 Rev B
26
921
Series
No System Power
•
Check main outlet breakers.
•
Check low voltage control breakers on front of blower pack.
Weak or Loss of Suction/Pressure
•
Check blower motors for function.
Blower motors can be tested individually by connecting a 9v battery
to pins 3(+) and 4(-) of Solid State Relay.
•
To replace blower motors, see video link below.
Carrier Arrives Hard at Customer Unit
•
Verify carriers are in good condition.
•
Ensure that the solenoid is engaging at end of cycle.
Check that I7 LED is turning on at end of cycle.
Refer to Appendix A for LED details.
Troubleshooting
