Carrier Infinity SYSTXCC4ZC01 - Manual (Page 7)

TROUBLESHOOTING
Zoning User Interface Control does not power up:
1. Recheck wiring to ABCD on all devices. Make sure all colors
match for every terminal.
2. Make sure power is applied to the indoor unit, and the Yellow
and Green LEDs are lit on the Infinity Damper Control.
3. Check for 24 VAC between the C and D terminals at the User
Interface terminal block.
4. Check fuse at indoor unit circuit board and Infinity Damper
Control.
Zoning User Interface Display says,
″Indoor Unit Not Found″:
1. Recheck wiring to ABCD on all devices. Make sure all colors
match for every terminal.
2. Press side button at User interface to try again.
3. Check power to indoor unit.
4. Disconnect all ABCD connections from every device and only
reconnect the User Interface to the indoor unit. If the indoor
unit is identified by the User Interface, then another device on
the ABCD connection may be at fault. Reconnect each
device’s ABCD connection one at a time and perform a
Re-Install from the Service Menu after each connection is
made. If one or more devices are not found after reconnecting
the last device, the last device may be suspect.
5. If the ABCD connection only contains an indoor unit and a
User Interface, then the wiring, indoor unit control board, or
User Interface may be at fault.
Zoning User Interface Display says, ″Outdoor Unit Not
Found ″, when applied with a two-speed communicating out-
door unit:
1. Recheck wiring to ABCD connector on outdoor unit. Make
sure all colors match for every terminal.
Zoning User Interface cannot find Zones 5 through 8:
1. Make sure zone module 5 - 8 has the dip switches set to the far
right.
2. Recheck wiring to the ABCD connections.
Zoning User Interface can find zones 5 - 8 but not 1 - 4:
1. Make sure zone module 1 - 4 has the dip switches set to the far
left.
2. Recheck wiring to the ABCD connections.
Some zones do not provide enough comfort (a noticeable
difference exists between the actual room temperature and
operating set point or equipment does not turn on)
1. The zone airflow limit may be set too low. Perform the zone
airflow limit checkout procedure. See Infinity Zoning System
User Interface installation instructions for details.
Some zones provide too much airflow and are noisy:
1. The zone airflow limit may be set too high. Perform the zone
airflow limit checkout procedure. See Infinity Zoning System
User Interface installation instructions for details.
Zone dampers do not move:
1. Check fuse located on Infinity Damper Control. If fuse failed,
check damper wiring and inspect for shorts. No more than five
damper motors should be connected to a single damper output.
Fuse should be replaced with an identical 3 amp automotive
fuse.
Sensor 1 Sensor 2
Sensor 3 Sensor 4
Damper Control
Module
ZS_
Damper Control
Module
ZS_C
Fig. 11 — Remote Room Sensor Averaging
4-Sensor Application (series- parallel)
A03233
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