55
T1s+dT1s
T1s
Compressor
Pump
t_interval_H
OFF
ON
OFF
ON
t_firstFH
t
When the cursor is on OPERATE PREHEATING FOR 
FLOOR, Use 
▼
 
▲
 to scroll to YES and press OK. The 
following page will be displayed:
Press ▼ ▲ to scroll and press OK to enter.
During first operation of the unit, air may remain in the 
water system which can cause malfunctions during 
operation. It is necessary to run the air purge function to 
release the air (make sure the air purge valve is open).
Go to MENU> FOR SERVICEMAN> 12.SPECIAL 
FUNCTION.
Before floor heating, if a large amount of water remains on 
the floor, the floor may be warped or even rupture during 
floor heating operation, in order to protect the floor, floor 
drying is necessary, during which the temperature of the 
floor should be increased gradually.
OK ENTER
12 SPECIAL FUNCTION
12.1 PREHEATING FOR FLOOR
12.2 FLOOR DRYING UP
If PREHEATING FOR FLOOR is selected, after press OK, 
the following page will be displayed:
12.1 PREHEATING FOR FLOOR
30°C
72 HOURS
ADJUST
T1S
t_fristFH
ENTER                       EXIT
Use 
▼
 
▲
to scroll the cursor to YES and press OK, the 
preheating for floor will turn off.
The operation of the unit during preheating for floor 
described in the picture below:
During preheating for floor, all the buttons except OK are 
invalid. If you want to turn off the preheating for floor, 
please press OK.
The following page will be displayed:
12.1 PREHEATING FOR FLOOR 
Preheat for floor is 
running for 25 minutes.
Water flow temperature is 20°C.
OK CONFIRM
12.2 FLOOR DRYING UP
8 days
5 days
5 days
45°C
15:00
ADJUST
t_DRYUP
t_HIGHPEAK
t_DRYDOWN
T_DRYPEAK
START TIME
12.1 PREHEATING FOR FLOOR
Do you want to turn off the preheating
for floor function?
OK CONFIRM
NO                        YES
12.2 FLOOR DRYING UP
01-01-2019 
ADJUST
START DAY
ENTER                     EXIT
12 SPECIAL FUNCTION
Active the settings and active the 
 “SPECIAL FUNCTION”?
OK CONFIRM
NO                        YES
If FLOOR DRYING UP is selected, after press OK , the 
following pages will be displayed: