Table of Contents
Advertisement
Diagnostic Maintenance & Status
Report - Internal Control Touchpad
The Diagnostic Maintenance & Status Report on the Internal
Control Touchpad provides detailed information on PTAC
control operation and operational status including present
modes, failures, airflow restriction warnings, operating tem-
peratures, and past failures. The lower right hand dot on the
center display flashes in this mode. In some cases the green
LED located in the lower left hand corner of the touchpad
below the OFF key will also be lit. This Green LED "Status
Light" only illuminates if there is an status code that has
been activated and should be reviewed. In most cases, this
light indicates that the indoor room filter is dirty should be
cleaned or replaced.
Note: Dirty filters cause the unit to consume more energy
than normally needed to condition a room.
Once the filter has been cleaned or replaced, the LED
should go out. If the LED is still illuminated after the
filter has been cleaned, activate the Diagnostic and
Status mode to view any active codes.
The unit may need additional cleaning or maintenance of
the evaporator or condenser coils. Please perform this step
before calling a servicer. A servicer should be called only if
cleaning the filter or coils does not clear the status code or
the code indicates that servicer should be called.
Diagnostic Status Report Mode
To enter Diagnostic Status Report mode, press and hold the
up and down arrows and, while holding, quickly press the
COOL key twice.
Active Failures
•
If there are no active failures or lockouts, the display will
show a double dash, "- -". If there is a code listed, see the
unit "Diagnostic Codes" chart for a list of definitions.
Operating Temperatures
•
If not in Diagnostic Status Report Mode, enter as
instructed above and press the Fan Speed key.
•
If already in Diagnostic Status Report mode, press the
Fan Speed key. The display will show the temperature
of the desired set point, SP; the temperature at the
wireless thermostat, rL; the indoor ambient temperature
behind the filter, IA; the indoor coil temperature, IC;
the indoor discharge air temperature, Id; the outdoor
coil temperature, OC; the outdoor ambient temperature,
OA; and the spare probe temperature, IH. If any of
the probes are not populated the display will show the
corresponding failure code.
IM 1193 / Page 22 of 32
Past Failure Log
• If not in Diagnostic Status Report Mode, enter as
instructed above and press the Fan Speed key twice.
• If already in Diagnostic Status Report mode, press the
Fan Speed key. While the display is showing operating
temperatures, the last 10 failure codes active or past can
be requested by pressing the Fan Speed key again. The
codes are displayed last entry first followed subsequently
by each preceding code.
Note: Modes F1 and Fd are also displayed in the normal
control operation (see "Diagnostic Codes"chart).
To exit Diagnostic Status Report mode, press the OFF key.
Clearance Check
Clearances around the unit should also be checked to make
sure that the intake air and discharge air paths have not
become blocked or restricted. A minimum of eight inches
clearance is needed from unit to furniture, beds, or other
objects for proper operation. Restricted discharge or intake
air will reduce the unit's operational performance. In severe
airflow restrictions damage can occur to unit components
such as the compressor, electric heater or fan motor.
Obtaining Service
In the event this unit requires repair or servicing beyond
what is covered in this manual, contact an authorized service
organization.
To obtain an authorized servicer, contact your Daikin sales
representative or agency.
Normal Operating Sounds and Conditions
Water trickling sounds
•
Water is picked up and distributed over the coil.
This improves the efficiency and helps with water
removal.
Water dripping
•
Water will collect in the base pan during high
humidity days.
This can cause overflow and drip from the outside of
the unit.
Air sounds
•
The fan cycle switch sets the operational mode of the
fan in the ON position. The fan will run continuously
whenever power is applied in this mode. In the
AUTO position, the fan will cycle on and off with the
compressor or electric heater.
Starting delay
•
You may notice a few minutes delay in the starting
if you try to restart the unit too soon after turning
it off or if you adjust the thermostat right after the
compressor has shut off. This is due to a built in
delay to protect the compressor.
Advertisement
Table of Contents
