Controller Operation - Pioneer KFDH075UW Technical Manual

Controller Operation

Controller Operation
1 stage
The controller supports the following functions:
a) Mode Cool, Dry, Fan
b) Indoor fan speed Auto, High, Medium, Low (* For 75/100 model only)
c) Sleep mode
d) Compressor protections:-
1. Comp 3 minutes restart protection
2. Indoor coil anti freeze
e) Room sensor and indoor coil sensor failure monitoring.
f) Non volatile memory – keep system settings
g) Programmable On/Off timer
h) Random restart to minimize voltage dip during compressor first cut in
cycle upon power up.
Hardware setting
2
A 2 way DIP switch, default setting as SW1 on, SW2 off.
CAUTION: DON'T CHANGE THE SETTING.
3)
Power Up
Upon power up, system will retrieve the most recent settings and system status from the
non volatile memory as below:-
a) Mode
b) Set temperature F or C
c) Fan speed
d) Sleep
The above setting can be changed via wired control panel or remote handset. The latest
settings will be recorded into the memory.
Should the data in the non-volatile memory were invalid, system will start with the default
settings as follow:-
a) System status - Off
b) Fan speed - High
c) Set temperature - 24
4 Programmable Timer
Upon count down of the number of set hours, the system will switch from Off to On or On to
Off depending on its current status.
Sleep mode
5 (Set temperature will be increased)
Ts+2.0
Ts+1.0
Ts+0.5
Ts
0.5
1.0
Sleep on
e) Key lock status
f) System status On/Off
g) Temperature display option
d) Mode-Cool
e) Key lock – off
f) Temperature display- set temperature
2.0
Sleep off
Hour