Technical data
45  CTC EcoZenith i250
General Information
8.9  Service
8.10  Function test
This menu is intended to test the function of the 
various components in the product. When the menu 
is activated, all the product’s functions stop. Each 
component can then be tested separately or together. 
All control functions are shut off. The only protection 
against incorrect operation are pressure sensors and 
the immersion heater’s superheat protection. When you 
exit the menu, EcoZenith returns to normal operation. 
If no button is pressed for 10 minutes, the product 
automatically returns to normal operation. 
!
NB: This menu is intended for the 
installer only.
8.10.7.1  Test heating circuit
If two radiator systems are installed, the values for both 
are displayed here.
Mixing valve
Opens and closes the mixing valve. (Open/Close)
Rad pump
Starts and stops the radiator pump. (On/Off)
LED room sensor
The room sensor alarm function can be controlled 
from here. When activated, the room sensor’s red LED 
comes on steady.
 Svenska  Nederlands  English  Deutsch
 Suomi  Française  Dansk  Norsk
1 2
1 2
  22,2 ºC  21,2 ºC  58 ºC  -5 ºC
1 2
1 2
1 2
1 2
1 2
T ºC
60
40
20
0
-20
16  20  0  4  8 12
00 - 06  22 - 24
00 - 06  22 - 24
00 - 06  22 - 24
00 - 06  22 - 24
00 - 06  23 - 24
00 - 08   23 - 24
00 - 08   22 - 24
06 - 09  18 - 21
07 - 09  -- - --
08 - 09  -- - --
08 -  --  --  - 21
08 -  --  --  - 21
10 - 12   20 - 23
10 - 12   20 - 23
  Room temp.  DHW  Operation  Installer
CTC EcoZenith  Monday 09:35
Night reduction Holiday
Heating circuit 2 (50)
Heating circuit 1
Room temp.
Start menu
Room temperature settings
Selecting DHW comfort
Heating system data
Installer settings menu
Extra
Hot water 
0.0 hours
On
Temperature
Normal
Weekly schedule
DHW
Operation data system
Status HP upper tank
Tank upper°C    49 (58)
Tank lower°C    42 (45)
Electric power kW    0.0+2.5
Current L1/L2/L3 0.0 0.0 0.0
Diff func. Pump / ºC    On 32
Pool ºC Off 22(20)
Operation data EcoZenith
Stored oper data
Heating circuit
Operation data heating
Installer
Time/Language  Settings  Define system  Service
Software display PCB:  20120205
Software HP PCB:  01234
Installer
Installer
Time 21:34
Date 2012-02-05
Settings
Heating circuit 1
Heating circuit 1
Heating circuit 2
Heat pump
Electric heater
Upper tank
Remote control  None
Communication
Solar panels
Diff thermostat function
Pool
Save settings
Load settings
Load factory settings
Max primary flow°C    55
Min primary flow°C    Off
Heating off, out°C    18
Heating off    120
Inclination°C  50
Adjustment°C  0
Room temp reduced°C  -2
 or
Primary flow reduced°C  -3
>>
Define system
Def heating circuit 1
Heating circuit 1
Heating circuit 2
Heat pump
CTC SMS
Cooling
Solar panels
Diff thermostat function  No
Pool (G50, G51, B50)    No
Heating circuit 1    Yes
Room sensor 1    Yes
Type    Wire
Service
Function test
Function test
Alarm log
Factory settings coded
Quick start compressor.
Software update, USB
Write log to USB
Control current sensors
Re-installation
Heating circuit
Heat pump
Valves
Electric heater
Solar
Diff thermostat function
Pool
Total operation time h:  14196
Max primary flow°C:    51
Consumtion kWh    20
Compressor:
 Total Operation time    1540
Stored oper data
Heat pump
Compressor On
Charge pump  On 47%
Brine pump  On
HP in/out°C  35.5 / 42.3
Current L1  4.0
Night reduction heat circ.
Weekly program  Block  NR
Decrease  Sunday 22:00
Increase  Friday 14:00
Decrease  -------- 00:00
Increase  -------- 00:00
Holiday
Holiday period  3 days
Out  Room1 Prim1  Return Room2  Prim2
Settings language
Night reduction heat circ. 1
Weekly program  Day by day  NR
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Weekly program  Day by day  DHW
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Weekly program DHW
!
When you exit the menu, CTC 
EcoZenith returns to the start menu.
 Svenska  Nederlands  English  Deutsch
 Suomi  Française  Dansk  Norsk
1 2
1 2
  22,2 ºC  21,2 ºC  58 ºC  -5 ºC
1 2
1 2
1 2
1 2
1 2
T ºC
60
40
20
0
-20
16  20  0  4  8 12
00 - 06  22 - 24
00 - 06  22 - 24
00 - 06  22 - 24
00 - 06  22 - 24
00 - 06  23 - 24
00 - 08   23 - 24
00 - 08   22 - 24
06 - 09  18 - 21
07 - 09  -- - --
08 - 09  -- - --
08 -  --  --  - 21
08 -  --  --  - 21
10 - 12   20 - 23
10 - 12   20 - 23
  Room temp.  DHW  Operation  Installer
CTC EcoZenith  Monday 09:35
Night reduction Holiday
Heating circuit 2 (50)
Heating circuit 1
Room temp.
Start menu
Room temperature settings
Selecting DHW comfort
Heating system data
Installer settings menu
Extra
Hot water 
0.0 hours
On
Temperature
Normal
Weekly schedule
DHW
Operation data system
Status HP upper tank
Tank upper°C    49 (58)
Tank lower°C    42 (45)
Electric power kW    0.0+2.5
Current L1/L2/L3 0.0 0.0 0.0
Diff func. Pump / ºC    On 32
Pool ºC Off 22(20)
Operation data EcoZenith
Stored oper data
Heating circuit
Operation data heating
Installer
Time/Language  Settings  Define system  Service
Software display PCB:  20120205
Software HP PCB:  01234
Installer
Installer
Time 21:34
Date 2012-02-05
Settings
Heating circuit 1
Heating circuit 1
Heating circuit 2
Heat pump
Electric heater
Upper tank
Remote control  None
Communication
Solar panels
Diff thermostat function
Pool
Save settings
Load settings
Load factory settings
Max primary flow°C    55
Min primary flow°C    Off
Heating off, out°C    18
Heating off    120
Inclination°C  50
Adjustment°C  0
Room temp reduced°C  -2
 or
Primary flow reduced°C  -3
>>
Define system
Def heating circuit 1
Heating circuit 1
Heating circuit 2
Heat pump
CTC SMS
Cooling
Solar panels
Diff thermostat function  No
Pool (G50, G51, B50)    No
Heating circuit 1    Yes
Room sensor 1    Yes
Type    Wire
Service
Function test
Function test
Alarm log
Factory settings coded
Quick start compressor.
Software update, USB
Write log to USB
Control current sensors
Re-installation
Heating circuit
Heat pump
Valves
Electric heater
Solar
Diff thermostat function
Pool
Total operation time h:  14196
Max primary flow°C:    51
Consumtion kWh    20
Compressor:
 Total Operation time    1540
Stored oper data
Heat pump
Compressor On
Charge pump  On 47%
Brine pump  On
HP in/out°C  35.5 / 42.3
Current L1  4.0
Night reduction heat circ.
Weekly program  Block  NR
Decrease  Sunday 22:00
Increase  Friday 14:00
Decrease  -------- 00:00
Increase  -------- 00:00
Holiday
Holiday period  3 days
Out  Room1 Prim1  Return Room2  Prim2
Settings language
Night reduction heat circ. 1
Weekly program  Day by day  NR
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Weekly program  Day by day  DHW
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Weekly program DHW
1 2
1 2
T ºC
60
40
20
0
-20
16  20  0  4  8 12
Radiatorsystem forts
  58 ºC  -5 ºC
Info golvtorkning estricht
Room temp.
Heating circuit 1
Night reduction Holiday
Room temp.
Heating circuit 1 (50)
Night reduction Holiday
Set. heat pump
Compressor   Permitted
1
Min outdoor temp °C  -15
2
Brine pump on    Auto
Tariff HP    Off
Minimum run time    6
Electric heater
Boiler upper°C    50
Boiler upper add°C    57
Boiler upper extra DHW°C  60
Boiler upper max kW    5.5
Boiler lower °C    55
Boiler lower max kW    6.0
Delay mixing valve    180
Main fuse A    25
Input voltage    3x400 V
Tariff EL    Off
Upper tank
Stop temp HP°C    Max
Start/stop diff upper ºC  7
Max time upper tank    20
Max time lower tank    40
Communication
MB address    1
Baud rate    9600
Parity   even
Stop bit    1
Installer
Save settings
Save settings
Load factory settings
Def Heat pump
Heat pump  Off
Flow/level switch  None
Test Heating circuit
Mixing valve1    Open
Rad pump1    On
Mixing valve2    Off
Rad pump2    Off
LED room sensor    On
Test valves
Test Elec.heater
3-way valve    Down
Electric heater L1A    Off
Electric heater L1B    Off
Electric heater L2A    Off
Electric heater L2B    Off
Electric heater L3A    Off
Electric heater L3B    Off
Electric heater A13    Off
Alarm log 
Latest alarm:  Time  HP (b) LP (b)  SH (K) I(A)
Low brine flow  07:20 6/3  8.8  3.3  15.9  3.9
Stored alarms:
Wrong phase order  10:30 1/3  27.9  8.6  -227  50.0
Com. err m. protect 09:01 1/3  27.9  3.6  42.2  0.0
Factory settings coded
Code  0 0 0 0
Upper tank 
Lower tank
Compressor operation
Expansion valve
Log compressor stop
Cooling
Operation data heating 2
Out  Room1 Prim1  Return Room2  Prim2
Test Heat pump
HP Compr.    Off
HP Brine p/Fan    Off
HP Charge p    0
Defrost Manually    Off
Compressor heat    Off
Drip tray heater    Off
Heating Cable    Off
4-way valve(Y11)    Off
Inst. Radiatorsystem1
<<
Anti Water Hammer    No
HP max DHW    Yes
Drying period mode    Off
Drying period temp ºC  25
 Room temp.  DHW  Operation  Installer
  Drying period activ  1  /  12  (25)
CTC EcoZenith  Monday 09:35
1 2
1 2
T ºC
60
40
20
0
-20
16  20  0  4  8 12
Radiatorsystem forts
  58 ºC  -5 ºC
Info golvtorkning estricht
Room temp.
Heating circuit 1
Night reduction Holiday
Room temp.
Heating circuit 1 (50)
Night reduction Holiday
Set. heat pump
Compressor   Permitted
1
Min outdoor temp °C  -15
2
Brine pump on    Auto
Tariff HP    Off
Minimum run time    6
Electric heater
Boiler upper°C    50
Boiler upper add°C    57
Boiler upper extra DHW°C  60
Boiler upper max kW    5.5
Boiler lower °C    55
Boiler lower max kW    6.0
Delay mixing valve    180
Main fuse A    25
Input voltage    3x400 V
Tariff EL    Off
Upper tank
Stop temp HP°C    Max
Start/stop diff upper ºC  7
Max time upper tank    20
Max time lower tank    40
Communication
MB address    1
Baud rate    9600
Parity   even
Stop bit    1
Installer
Save settings
Save settings
Load factory settings
Def Heat pump
Heat pump  Off
Flow/level switch  None
Test Heating circuit
Mixing valve1    Open
Rad pump1    On
Mixing valve2    Off
Rad pump2    Off
LED room sensor    On
Test valves
Test Elec.heater
3-way valve    Down
Electric heater L1A    Off
Electric heater L1B    Off
Electric heater L2A    Off
Electric heater L2B    Off
Electric heater L3A    Off
Electric heater L3B    Off
Electric heater A13    Off
Alarm log 
Latest alarm:  Time  HP (b) LP (b)  SH (K) I(A)
Low brine flow  07:20 6/3  8.8  3.3  15.9  3.9
Stored alarms:
Wrong phase order  10:30 1/3  27.9  8.6  -227  50.0
Com. err m. protect 09:01 1/3  27.9  3.6  42.2  0.0
Factory settings coded
Code  0 0 0 0
Upper tank 
Lower tank
Compressor operation
Expansion valve
Log compressor stop
Cooling
Operation data heating 2
Out  Room1 Prim1  Return Room2  Prim2
Test Heat pump
HP Compr.    Off
HP Brine p/Fan    Off
HP Charge p    0
Defrost Manually    Off
Compressor heat    Off
Drip tray heater    Off
Heating Cable    Off
4-way valve(Y11)    Off
Inst. Radiatorsystem1
<<
Anti Water Hammer    No
HP max DHW    Yes
Drying period mode    Off
Drying period temp ºC  25
 Room temp.  DHW  Operation  Installer
  Drying period activ  1  /  12  (25)
CTC EcoZenith  Monday 09:35
8.10.7.2  Test Heat pump
Function test carried out on the heat pump.
HP Compr.  (On/Off)
(On/Off) This is where the function test is carried out 
on the compressor. The fan or brine pump and charge 
pump are also operating so that the compressor is not 
going to trigger its pressure switches.










