SpacePak ESP-J - Troubleshooting Flow Charts

42
Yes
No Thermostat Call Displayed on Boa rd
Proper 240v i ncoming
(115 if converted) across
L1 and L2?
No
Is Main Breaker
on?
Yes
Check for loose
wiring, repair as
needed
No
Turn on Main
Breaker
Is pr ob le m sti ll
there?
No
Unit is operating
Yes
Is pr ob le m sti ll
there?
No
Yes
Is line voltage on
primary side (see
wiring diagram) of
transformer?
No
Check for loose/
damaged wires
repair/replace a s
needed
Yes
Is 24v on secondary side
(se e wi ring diagram) of
transformer?
Is problem still
there?
Yes
Yes
Is 24vac on
molex connector
(see wiring
diagram)
No
Loose or
damaged wires?
No
Replace transformer
Is pr ob le m sti ll
there?
Yes
Repair or replace as
needed
Is problem still
there?
No
Replace Main
Control Board
Yes
Is J 13 mole x secure
from transformer to
control bo ar d?
Yes
Yes
No
No
Loose or
damaged wires?
Yes
Repair as
needed
No
Is problem still
there?
No
Yes
Yes
No
TROUBLESHOOTING FLOW CHARTS