Temp System Thermostat Reset; Broadcast/Daylight Savings Time; Network Time Broadcast; Network Time Request - Carrier 33CS Installation, Service, And Troubleshooting Instructions

OUTDOOR-AIR TEMPERATURE SENSOR OUT OF
RANGE — An HF10 error is issued when the outdoor-air
temperature sensor is reading below −40 F or greater than
150 F. The outdoor air temperature sensor can be recali-
brated. The HF10 error will automatically clear when the
sensor reading is back within the allowable range.
To check the outdoor-air temperature sensor:
1. Check that the outdoor-air temperature sensor wiring and
connections to the circuit board are physically intact. En-
sure the 5-conductor control wiring running between the
relay pack and the TEMP system thermostat is not run
near AC, control, or communication bus wiring. Main-
tain a minimum separation of 12 in. or more between other
wiring and remote room sensor wiring.
2. Check the outdoor-air temperature sensor calibration. Cali-
brate the sensor by manual calibration at the TEMP sys-
tem thermostat using the Outdoor-Air Temperature Sen-
sor Calibration function (category 5, option 9) and an
accurate thermometer. Measure the temperature at the
outdoor-air temperature sensor location using the accu-
rate thermometer. Wait for the reading to stabilize. Using
the set point buttons, increase or decrease the tempera-
ture display to match the reading of the thermometer.
HUMIDITY SENSOR OUT OF RANGE — An HF11 error
is issued when the humidity sensor is reading below 0% or
greater than 100%. The humidity sensor can be recalibrated.
The HF11 error will automatically clear when the sensor read-
ing is back within the allowable range.
To check the humidity sensor:
1. Check if the humidity sensor wiring and connections to
the circuit board are physically intact. Ensure the
5-conductor control wiring running between the relay pack
and the TEMP system thermostat is not run near AC, con-
trol, or communication bus wiring. Maintain a minimum
separation of 12 in. or more between other wiring and
remote room sensor wiring.
2. Check the humidity sensor calibration. Calibrate the sen-
sor by manual calibration at the TEMP system thermostat
using the Humidity Sensor Calibration function
(category 5, option 12) and an accurate psychrometer. Mea-
sure the humidity at the humidity sensor location using
the accurate psychrometer. Wait for the reading to
stabilize. Using the set point buttons, increase or de-
crease the humidity display to match the reading of the
psychrometer.
TEMP System Thermostat Reset —
tem thermostat constantly verifies operation and the infor-
mation it utilizes. When it finds a fault in a specified area,
the TEMP system thermostat resets.
The TEMP system thermostat will reset when it finds fault
in the inability of the microprocessor to properly operate the
programs used by the TEMP system thermostat causes an
improper response to zone and system conditions.
Each piece of information received by the TEMP system
thermostat is verified to eliminate the use of incorrect data.
Each portion of information stored by the TEMP system ther-
mostat is verified to eliminate the use of incorrect data. If
incorrect data is found the TEMP system thermostat will re-
set and replace the incorrect data with the default value.
When possible, system communication and data storage
faults are corrected by the TEMP system thermostat. When
corrections cannot be made the information is regarded as
invalid and not utilized.
597
As a part of the Carrier Comfort system, on the
network, the TEMP system thermostat can send and receive
broadcasts.
For the system to function correctly, the following de-
vices must be configured as described below:
• one TEMP system thermostat must have a timeclock and
be a network time broadcaster unless time is received from
a different network device (comfort controller). More than
one timeclock on a network is allowed
• there must be only one TEMP system thermostat config-
ured as a network time requester
• one and only one network device must be configured as
the broadcast acknowledger per bus
• all other devices should be configured to receive network
time
Network Time Broadcast —
Broadcast option is set to ON, the TEMP system thermostat
(if equipped with a timeclock) will broadcast CCN time and
date on the network 2 times a day.
When the Network Time Broadcast option is set to OFF,
the TEMP system thermostat will not broadcast time and date.
To set the option, configure category 9, option 5. Use the
left set point buttons to toggle the option ON or OFF. The
default is OFF.
NOTE: The TEMP system thermostat must have its own time-
clock to broadcast network time, otherwise all network de-
vices will not function correctly.
Network Time Request —
Request option is set to ON, the TEMP system thermostat
will request CCN time and date from the network once ev-
ery 30 seconds. If there are multiple TEMP system thermo-
stats on a network there must be at least one TEMP system
thermostat requesting time.
When the Network Time Request option is set to OFF, the
TEMP system thermostat will not request time and date.
To set the option, configure category 9, option 3. Use the
left set point buttons to toggle the option ON or OFF. The
default is OFF.
Receive Network Time —
work Time option is set to ON, the TEMP system thermostat
will accept a broadcast of CCN time and date from the
network.
When the Receive Network Time option is set to OFF, the
The TEMP sys-
TEMP system thermostat will not accept a CCN time and
date broadcast.
To set the option, configure category 9, option 4. Use the
left set point buttons to toggle the option ON or OFF. The
default is ON.
→
Broadcast Acknowledger —
knowledger option is set to ON, the TEMP system thermo-
stat will acknowledge any CCN broadcast. Every primary
and secondary bus must have only one broadcast
acknowledger.
When the Broadcast Acknowledger option is set to OFF,
the TEMP system thermostat will not acknowledge a CCN
broadcast.
To set the option, configure category 9, option 1. Use the
left set point buttons to toggle the option ON or OFF. The
default is OFF.
NOTE: Broadcast Acknowledgement works best when con-
figured in a Zone Controller, TEMP system thermostat, or
any other CCN device which can be configured as a broad-
cast acknowledger. Avoid using a monitor thermostat when
possible.
24

BROADCAST/DAYLIGHT SAVINGS TIME

When the Network Time
When the Network Time
When the Receive Net-
When the Broadcast Ac-