York HIDS006B21S Service Manual page 68

TROUBLESHOOTING
Other
Abnormalities
Event
Operation of Heating
Radiation Sensor
though the Room is
already Heated.
No Operation of
Heating Radiation
Sensor though the
Room is Cold.
Motion Sensor
Setting is not
indicated on the
Wired Controller.
1: Prepare thermometer for checking. Make sure there are no heat sources before taking measurement.
3-46
(Motion and Radiation Sensor)
Cause
Setpoint on the wired
controller is high and the
difference against the
radiated temperature is
big.
Radiated temperature is
detected as low.
Radiation sensor setting
is disabled on the wired
controller.
There is a heat sources
other than human in the
detection area of the
sensor.
Setpoint on the wired
controller is low and the
difference against the
radiated temperature is
small.
Radiated temperature is
detected as high.
Communication error
between indoor unit
control PCB and motion
and radiation sensors
PCB.
Abnormalities of Devices
Check Item
Immediately after
"Radiation Sensor is
activated" indication on
wired controller LCD,
check the "Check Mode 1:
q2".
↓
Check if there is more
than 7ºF (4ºC) difference
between the radiated
temperature and the
setpoint on the wired
controller.
Stop the operation from
the wired controller and
check the "Check Mode 1:
q2".
↓
Check if there is more than
18ºF (10ºC) differences
between the temperature
near to the floor* and
1
radiated temperature.
Check setting on
the wired controller.
Check heat source
(a moving object whose
temperature is different
from surroundings).
Immediately after "Radiation
Sensor is activated"
indication on wired controller
LCD, check the "Check
Mode 1: q2".
↓
Check if there is less
than 5ºF (3ºC) difference
between the radiated
temperature and the
setpoint on the wired
controller.
Stop the operation from
the wired controller and
check the "Check Mode 1:
q2".
↓
Check if there is more than
18ºF (10ºC) difference
between the temperature
near to the floor and
1
radiated temperature.
Check connection and
connectors.
Action
(Turn OFF Main Switch)
True: No problem.
This control targets the
setpoint on the wired
controller with heating
operation.
If setpoint is high, this
control is activated even
though the room is
heated.
False: Replace control
PCB.
True: Replace motion
and radiation sensors
PCB.
False: Adjust the
[Optional Function: K7]
to [01: Upward] and see
if there are any changes.
If the symptom continues
then replace motion and
radiation sensors PCB.
Correct the setting.
Remove it. Depending
on the heat source,
the control is hard to
operate.
True: No problem.
This control does not
operate when the
difference between
setpoint on the wired
controller and radiated
temperature is small.
False: Replace control
PCB.
True: Replace motion
and radiation sensors
PCB.
False: Adjust the
[Optional Function: K7]
to [02: Downward] and
see if there are any
changes.
If the symptom
continues, replace
motion and radiation
sensors PCB.
If the symptom
continues, replace
motion and radiation
sensors PCB.
SM-18001-rev.1