Fisher PCG-06, Installation, Operation And Service Manual, Page: 53 / 66

HYDRONIC CASSETTE 53
DEHUMIDIFICATION MODE
1. MTV2, AUX1 and heater always off.
2. If Tr >= 25 ºC, MTV1 and AUX2 will be ON for 3 minutes, and OFF for 4 minutes.
3. If 16 ºC < =Tr < 25 ºC, MTV1 and AUX2 will be ON for 3 minutes, and OFF for 6 minutes.
4. If Tr <16 ºC, MTV1 and AUX2 will be turned off for 4 minutes.
At the end of the above dehumidification cycle, system will decide the next dehumidification control option.
Indoor fan will run at low speed throughout the dehumidification process.
AUTOMODE
1. If current running mode is auto cool mode, it will change over to auto heat mode upon satisfy all the
conditions below:
 Ts-Tr ≧ 1.0°C(or -4 ºC if economy contact is activated)
 MTV1 has stop
≧
10 min.
2. If current running mode is auto heat mode, it will change over to auto cool mode upon satisfy all the
conditions below:
 Tr-Ts
≧
1.0°C(or +4 ºC if economy contact is activated)
 MTV2 has stop
≧
10 min.
Note: Auto cool or auto heat operation are the same as cool or heat mode respectively.
SLEEP MODE
a) Sleep mode can only be set in cool or heat modes only.
b) In cool mode, after sleep mode is set, the indoor fan will run at low speed and Ts will increase 2 ºC
during 2 hours.
c) In heat mode, after sleep mode is set, the indoor fan will run at set speed and Ts will decrease 2 ºC
during 2 hours.
d) Changing of operation mode will cancel sleep mode.
The cool mode sleep profile is:
The heat mode sleep profile is:
Hour
Sleep on
0.5
1.0
2.0
Sleep off
Set temperature
Ts
Ts+0.5
Ts+1.0
Ts+2.0
Hour
Sleep on
0.5
1.0
2.0
Sleep off
Set temperature
Ts
Ts-2.0
Ts-1.0
Ts-0.5