Digital Board Diagnostics; Diagnostic Maintenance And Status Report; Active Failures; Operating Temperatures - Amana PTAC Service Instructions Manual

SERVICING

DIGITAL BOARD DIAGNOSTICS

If a failure is detected on the digital board, there will be a
green light constantly lit up. This light is located under the
OFF touch pad button. The board will need to enter in the
Diagnostic Mode to determine failure code and procedures
to follow to correct problem.
Diagnostic Maintenance & Status Report
The Diagnostic Maintenance & Status Report Mode provides
detailed information on PTAC control operation and opera-
tional status including present modes, failures, airflow re-
striction warnings, operating temperatures, and past fail-
ures. 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 illumi-
nates 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 mainte-
nance 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

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 defi-
nitions.
46
twice.

Operating Temperatures.

• If not in Diagnostic Status Report Mode, enter as in-
structed above and press the Fan Speed
• If already in Diagnostic Status Report mode, press the
Fan Speed key. The display will show the tem-
perature of the desired set point, SP; the temperature
at the wireless thermostat, rL; the indoor ambient tem-
perature behind the filter, IA; the indoor coil tempera-
ture, IC; the indoor discharge air temperature, Id; the
outdoor coil temperature, OC; the outdoor ambient tem-
perature, OA; and the spare probe temperature, IH. If
any of the probes are not populated the display will show
the corresponding failure code.
Past Failure Log
• If not in Diagnostic Status Report Mode, enter as in-
structed above and press the Fan Speed
• If already in Diagnostic Status Report mode, press the
Fan Speed key. While the display is showing op-
erating 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 that modes F1 and
normal control operation (see "Diagnostic Codes"
chart).
To exit Diagnostic Status Report mode, press the OFF
key.
key.
key twice.
Fd are also displayed in the