GSZC18 Installation

11
THERMOSTAT MENU
If this heat pump is installed with a CT compatible furnace, the
system is recognized as a dual fuel system. The balance point
temperature should be set via the indoor unit. See indoor unit
instruction manual for details on how to set the balance point.
NETWORK TROUBLESHOOTING
Verify that the bus TERM dipswitches are in the ON position.
1
2
OFF ON
TERM
TERM
The ComfortNet™ system is a fully communicating system which
operates over a communicating network. Occasionally the need
to troubleshoot the network may arise. The integrated control
module has some on-board tools that may be used to trouble-
shoot the network. These tools are: red communications LED,
green receive (Rx) LED, and learn button.
• Red communications LED - Indicates the status of the
network. The table below indicates the LED status and
the corresponding potential problem.
• Green receive LED - Indicates network traffic. The table
below indicates the LED status and the corresponding
potential problem.
• LEARN button - Used to reset the network. Depress the
button for approximately 2 seconds to reset the
network.
SYSTEM TROUBLESHOOTING
NOTE: Refer to the instructions accompanying the CT
compatible indoor air handler/furnace/modular blower unit for
troubleshooting information regarding indoor unit diagnostics..
Refer to the Troubleshooting Chart at the end of this manual for
a listing of possible air conditioner and heat pump error codes,
possible causes and corrective actions.