ITS Telecom ITS-11.8HD, Product Manual

Page: 13 / 14

ITS Heat Pumps
Domestic Heat Pump Product Manual
Page 13 of 14
PP1 PP1 Tank water temperature sensor failure or connection problem.
PP2 PP2 Outlet water temperature sensor failure
PP3 PP3 Coil temperature sensor failure
PP4 PP4 Return gas temperature sensor failure
PP5 PP5 Ambient temperature sensor failure
PP6 PP6 Discharge gas over temperature protection
PP7 PP7 Anti-freeze protection
PP8 PP8 Discharge gas sensor failure
EE1 EE1 High working gas pressure – water flow restriction
EE2 EE2 Low working pressure – possible gas leak
EE3 EE3 Water flow failure (swimming pool heat pumps)
EE4 EE4 Phase protection (3 phase models only)
Defrost Indication Busy defrosting
EE8 Communication failure between controller and display.
9 STANDARD CONTROLLER PARAMETERS
Parameter Description Range Default
parameter 0
Return water temperature to start electrical heater
0-50°C 15°C
parameter 1
Setting desired water temperature in water tank. 10-60°C 53°C
parameter 2
Defrosting cycle
10-90min 45min
parameter 3
System Coil Temperature point to start defrosting
0 - -30°C -7
parameter 4
System Coil Temperature point to stop defrosting
2-30°C 13°C
parameter 5
Defrosting cycle
1-12Min 8Min
parameter 6
Heat Pump running controlled by (o-inflowing water temp. 1 – out flowing water temp.0
0-1 0
parameter 7
Memory recovery ( Auto restart) after power failure
0-1 1 (yes)
parameter 8
Electronic expansion valve control(manual / automatic) 0-1 1 (yes)
parameter 9
Different working mode of water pump
0-1 1
Description Range Default
parameter A
Fan motor working mode 0=daytime working mode 1=night time working mode
0-1 0
parameter B
Target superheat setting
F-F -3 to +3
parameter C Manual control of EE valve
10-50 35
parameter D
Temperature to start the electric heater (ambient)
-5 ~ 10°C 5
parameter E
Water temp. difference setting for heat pump restart-up
2 ~ 15°C 3
parameter F
Inflowing water temperature
-9 ~ 99°C measured
parameter 10
Out flowing water temperature
-9 ~ 99°C measured
parameter 11
System Coil temperature
-9 ~ 99°C measured
parameter 12
Return Gas temperature
-9 ~ 99°C measured
parameter 13
Ambient temperature
-9 ~ 99°C measured
parameter 14
Discharge Gas temperature
0-C7 measured
parameter 15
Real time paces of EE valve
10-50 measured