Electronic Control Configuration; Electronic Control Error Code Diagnostics And Test Mode - Friedrich H)A09K25L Service Manual

Electronic Control Configuration
The adjustable control dip switches are located at the lower
left hand portion of the digital Smart Center. The inputs are
only visible and accessible with the front cover removed from
the Unit.
Factory Dip Switch Configuration
1 2 3
O
N
Dip Switch Setting
Switches 1-4 ON
Switch 5-7 OFF
Switch 8 ON
Room Freeze Protection – Switch 6
Units are shipped from the factory with the room freeze protec-
tion disabled. Room Freeze Protection can be switched on at
the owner's preference by moving Dip Switch 6 to 'ON'. This
feature will monitor the indoor room conditions and in the event
that the room falls below 40°F the unit will cycle on high fan with
the electric heater. This occurs regardless of mode.
Emergency Heat Override – Switch 7
Units are shipped from the factory with the room emergency
heat override disabled. In the unlikely event of a compressor
failure a heat pump unit may be switched to operate in only the
electric heat mode until repairs can be made, by moving Dip
Switch 7 to 'ON'.
Discharge Air Sensor Override – Switch 8
This switch MUST remain in the "ON" position for Vert-I-Pak
models, since they do not use a discharge air sensor. If the
switch is positioned in the "OFF" position on these models it
will result in the erroneous display Error Code 14 indicating that
the Discharge air temperature sensor is open or shorted.
Note: In order for the control to recognize "Dip" switch
setting changes, the unit must be disconnected
from power supply when making any configuration
changes.
12
4 5 6 7 8
Electronic Control Error Code
Diagnostics and Test Mode
Error Code Diagnostics
The VPAK electronic control continuously monitors the Vert-I-Pak
unit operation and will store error codes if certain conditions
are witnessed. In some cases the unit may take action and shut
the unit off until conditions are corrected.
To access the error code menu press the 'HEAT' and 'HIGH
FAN' buttons simultaneously for three seconds. If error codes
are present they will be displayed. If multiple codes exist you
can toggle between error codes using the temp up ▲ button. To
clear all codes press the temp down ▼ button for three seconds
while in the error code mode. To exit without losing codes
press the 'Low Fan' button.
Button Location for Vert-I-Pak Models
With the remote thermostat escutcheon installed, the button
locations to access the diagnostics mode can be located as
shown below.
Cool
Temp
Temp
Fan only
* Heat and high fan - access error codes
* Temp up ▲ and temp down ▼ - toggle between error codes
* Low fan - exit error code mode without losing stored error
codes.
* Temp down ▼ - clears all error codes
NOTE: Hold buttons down for three seconds.
High fan
Heat
Power
Low fan