Bard TCS22-***-003, Operation Manual

Page: 95 / 95

2100-444-002A
Page 89
7.2.2 WALLMOUNT QUICK TROUBLESHOOTING GUIDE.
Operation Procedure
ByPassing TCS22 Controller Disconnect power to the TCS22. Unplug the plug in
connectors J4 and J5 from the controller
Compressor Test Connect jumper wire on A/C unit low voltage terminals
from R to Y and observe Compressor operation (There
will be a Time delay between the installation of the
jumper and the starting of the Compressor. The
Compressor Time Delay relay will determine the time
delay period.). After the Compressor starts, the jumper
wire can be removed.
Blower Test Connect a jumper wire on A/C unit low voltage terminals
R to G and observe Blower operation (The Blower will
continue to run for One (1) minute after the jumper is
removed).
Economizer Test Connect a jumper wire on A/C unit low voltage terminals
R to G and observe Blower operation. After Blower
operation is confirmed, the Economizer can be tested.
Leave the jumper in place from the previous step.
Connect a separate jumper on the A/C unit low voltage
terminals from E to F and observe the Economizer
operation (Never connect power to terminals E or F).
Heater Test Connect a jumper wire on A/C unit low voltage terminals
R to W1. The Heating contactor will engage when the
jumper is connected. The Blower will also operate while
this jumper is in place. To check the operation of the
Heater, you will have to check the Discharge Air
temperature of the A/C unit.
Restarting TCS22 Remove All jumper wires and reconnect the plug in
connectors J4 and J5 to the controller.
Reapply power to
the TCS22