Friedrich H)A09K50L Manual Do Utilizador

14

Thermostat Compatibility: 

The VPAK Electronic Control is compatible with 

Friedrich 

RT4 and RT5 Thermostats. 

The VPAK Electronic control is also compatible 

with most standard Single Stage Heat/Cool 

Thermostats.  
NOTE:  Field supplied Thermostats MUST 

energize the fan circuit on a call for Heating 

or Cooling, and (when used with a Heat 

Pump Unit) MUST energize the “B” terminal 

in Heating in order for the unit to function 

correctly.
 

Compressor Time Delay: 

The Electronic control is equipped with a 

random (180 to 240 seconds) Compressor 

time delay that is initiated every time the 

compressor cycles “Off.”  The “delay on break” 

timer is initiated by the following actions: 

(1) Satisfying the temperature set point 

(2) Changing mode to fan only 

(3) Turning the unit off 

(4)  Restoring power after a failure

 

Note: The Compressor Time Delay feature is 

disabled during “Test Mode” operation. 
 

Fan delay: 

The Electronic Control is equipped with a 

feature that will start the fan 5 seconds 

EARLY 

(i.e. before compressor or heater) when unit 

cycles 

“ON.”  When the unit cycles “OFF” the 

fan will 

DELAY for 30 seconds in Cooling and 

15 seconds in Heating. 
Note: the fan delay is disabled during 

Mode operation.

Emergency Heat: 

The Electronic Control is equipped with a 

feature that allows servicer/end user to switch 

to electric heat operation when the compressor 

fails during the heating season, (See DIP 

switch position 7) until the compressor can be 

replaced.