Troubleshooting Procedures; General Operating Problems - Carrier 33CS Installation, Service, And Troubleshooting Instructions

Unitary controller thermostat
Table of Contents

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Table 13 — Network Software Access Table Names
TABLE DESCRIPTION
Points Display Table
Set Point Table
Config Table 1
Config Table 2
Maintenance Table 1
Maintenance Table 2
Optimal Start Table
Service Table 1
Service Table 2
Service Table 3
Alarm POC Table
Alarm Text Table
Broadcast POC Table
Broadcast Table
Occupancy POC Table
Occupancy Supervisory Table
Holiday POC Table
Holiday Schedule 1
Holiday Schedule 2
Holiday Schedule 3
Holiday Schedule 4
Holiday Schedule 5
Holiday Schedule 6
Holiday Schedule 7
Holiday Schedule 8
Holiday Schedule 9
Holiday Schedule 10
Holiday Schedule 11
Holiday Schedule 12
Holiday Schedule 13
Holiday Schedule 14
Holiday Schedule 15
Holiday Schedule 16
Holiday Schedule 17
Holiday Schedule 18
Time/Date Table
Device ID Table
LEGEND
POC — Product Outboard Control

TROUBLESHOOTING PROCEDURES

The most common operating problems and types of errors
associated with the TEMP system thermostat are:
• Operating Problems. No display or flashing displays occur
when the TEMP system thermostat is not receiving rated
power or has miswired connections.
• Equipment Operating Problems. The TEMP system ther-
mostat does not select a system mode, does not energize
the associated unit, or does not energize the second stage
of the unit.
• Hardware Failure (HF) Errors. These errors occur when
the TEMP system thermostat detects a problem with one
of its own components or associated device.
• Storage Failure (SF) Errors. These errors occur when the
TEMP system thermostat detects and replaces faulty data
contained within memory with factory selected default val-
ues.
• System Errors (SE). These errors occur when the TEMP
system thermostat detects a system or zone operating
problem.
Operating problems other than those listed above may be
related to the network.

General Operating Problems

NO DISPLAY — If the TEMP system thermostat display
TABLE NAME
remains blank after 24 vac power has been applied to the
ZONESTAT
relay pack, it is an indication that power is not reaching the
SETPOINT
TEMP system thermostat.
CONFIG1
CONFIG2
plied from the power transformer. Acceptable voltage range
ALARMLOG
is 22 to 30 vac. The va requirements are 10 va for a single
OCCPC01E
zone relay pack.
AOSSDEFC
SERVICE1
relay pack or replace the transformer as necessary.
SERVICE2
SERVICE3
with the TEMP system thermostat connected, check for ap-
ALARMDEF
proximately 10 vdc (steady) across the red and white wires
ALARMS01
from the relay pack.
BRODEFS
BROCASTS
tween the TEMP system thermostat wiring connector board
OCCDEFM
and the relay pack.
OCCPC01S
HOLIDEF
properly seated in the wiring connector board. Disconnect,
HOLDY01S
then reconnect the ribbon cable from the connector board. If
HOLDY02S
the TEMP system thermostat display remains blank after the
HOLDY03S
ribbon cable is reconnected, use the check the TEMP system
thermostat wiring connector block and ribbon cable. Re-
HOLDY04S
place the wiring block or TEMP system thermostat if
HOLDY05S
required.
HOLDY06S
HOLDY07S
BLINKING DISPLAY — If the TEMP system thermostat
display shows 4 rotating zeros that either blink on and off,
HOLDY08S
or that are constantly displayed, it is an indication the TEMP
HOLDY09S
system thermostat is continuously going through the power-up
HOLDY10S
sequence and cannot enter normal operating mode.
HOLDY11S
HOLDY12S
the display to blink or constantly display 4 zeros:
HOLDY13S
• Low voltage from the 10 va for the single zone relay pack
HOLDY14S
HOLDY15S
• The yellow or blue wire from the single zone relay pack
HOLDY16S
HOLDY17S
HOLDY18S
• The TEMP system thermostat ribbon cable is improperly
TIME
CCS_MON
• The TEMP system thermostat wiring connector board is
• The TEMP system thermostat or single zone relay pack is
BLINKING HEAT OR COOL ANNUNCIATOR — If the
HEAT or COOL annunciator of the TEMP system thermo-
stat display continuously blinks, it is an indication that the
TEMP system thermostat has detected that one of the High/
Low Temperature Limits has been exceeded.
supply air temperature sensor and the DX coil temperature
sensor for maintaining limits.
1. The display will return to normal when the supply air tem-
2. If the TEMP system thermostat does not utilize a DX coil
3. Check the TEMP system thermostat supply-air tempera-
30
At the relay pack, check that adequate power is being sup-
Check the wiring between the 24 vac transformer and the
At the TEMP system thermostat wiring connector board,
Check the continuity of the 5-conductor wire running be-
Check that the TEMP system thermostat ribbon cable is
Check for any of the following conditions that would cause
transformer. Acceptable voltage range is 22 to 30 vac.
to the TEMP system thermostat wiring connector board is
broken or disconnected.
installed or defective.
defective. Check ribbon cable and wiring connector block.
defective.
The TEMP system thermostat uses information from the
To return the blinking display to normal:
perature returns to within the limits of the current system
operating mode. Refer to the System Time Guards sec-
tion on page 17 for more information.
sensor, but the DX Coil Temperature Sensor option has
been configured to ON, the annunciator will blink. Re-
configure the DX Coil Sensor option.
ture sensor or DX coil temperature sensor to see if the
sensor is wired incorrectly or defective.

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