Ctk04 Alternate Wiring Scheme; Comfortnet System Advanced Features; Diagnostics - Daikin ComfortNet DX16TC Series Service Instructions Manual

SERVICING
40VA Transformer (included in
CTK0*** kit)
24 VAC
208/230 VAC
CTK04 System Wiring Using Three-Wires
between Air Handler and AC / HP
and Four Wires between Air Handler and Thermostat

CTK04 ALTERNATE WIRING SCHEME:

Three wires should be utilized between the indoor and out-
door units. For this wiring scheme, two wires for the data lines,
1 and 2 are required and a wire connecting the common "C"
terminals between the indoor and outdoor units. This con-
nects both commons to the same ground potential allowing
for better communication. A 40VA, 208/230 VAC to 24 VAC
transformer must be installed in the outdoor unit to provide
24 VAC power to the outdoor unit's electronic control. The
transformer is included with the CTK0* kit. See kit instructions
for mounting and wiring instructions. Four wires are required
between the indoor unit and thermostat.
1 Thermostat
C
2 R
Modular Blower
1 2 R C
Integrated Control Module
AC/HP Integrated
1 2 R C
Control Module
ComfortNet™ System Advanced Features
The ComfortNet™ system permits access to additional system
information, advanced setup features, and advanced diag-
nostic/troubleshooting features. These advanced features are
organized into a menu structure. Refer to the Installation and
Start-Up instructions shipped with your particular CTKO***
thermostat.

Diagnostics

Accessing the air handler's diagnostics menu provides ready
access to the last six faults detected by the air handler. Faults
are stored most recent to least recent. Any consecutively
repeated fault is stored a maximum of three times. Example:
A clogged return air filter causes the air handler's motor to re-
peatedly enter a limiting condition. The control will only store
this fault the first three consecutive times the fault occurs.
NOTE: It is highly recommended that the fault history be
cleared after performing maintenance or servicing the air
handler.
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