GSX14 Service Manual

SERVICING

S-10A COPELAND COMFORT ALERT

UNITARY (UC) CONTROL DIAGNOSTICS

Applies to ASXC, ASZC, DSXC, and DSZC models

HIGH VOLTAGE!

Disconnect ALL power before servicing

or installing. Multiple power sources

may be present. Failure to do so may

cause property damage, personal injury

or death.

The Copeland Comfort Alert

diagnostics are fully inte-

grated into the unitary (UC) control. The UC control and

integraged Comfort Alert™ diagnostics provide around-the-

clock monitoring for common electrical problems, compres-

sor defects and broad system faults. If a problem is detected,

LED indicators flash the proper alert codes to help you

quickly pinpoint the problem.

The diagnostic tables on following pages provide detailed

information regarding the system symptons, indicators (LED

and thermostat), potential problem(s), and corrective ac-

tions. The diagnostic information applies to systems wired

as 24VAC traditional (legacy) systems and systems wired as

communicating systems with the CTK0* communicating

thermostat.