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LCD Electronic Thermostat CFU-D series
Basic Operation
Modes
Fan speed
Backlight
Valve
Memory
Occupancy contact
Display selection
Temperature offset
Low temperature protection
(Defrost)
External sensor
Key lock
Error code
Parameter Setting
When the unit in " OFF " status, press and hold
dISP > OSEt > dEfr > USP > LSP > SEn* > COOL* > HEAt* . Use
10 seconds, the changed setting will be saved and exit automatically.
Display selection : ambient temperature "rt" / set point "SP"
dISP
Temperature offset : -3,-2,-1, 0, 1, 2, 3
OSEt
Defrost - low temperature protection : On / OFF
dEfr
Upper set point limit : 10 ... 35 °C
USP
Lower set point limit : 5 ... 30 °C
LSP
Sensor selection : external "Et" / internal "Int"
SEn
Economy set point range for cooling : 25 ... 30 °C
COOL
Economy set point range for heating : 15 ... 20 °C
HEAt*
LCD Segment & Dimensions [mm]
P-setting mode
Set point
Ambient temp.
Heating
Cooling
Defrost
Low
Mid
On/Off , Cooling
/ Heating
Press button "
" to switch on or off. To switch off, press and hold the button 2 seconds.
Press button " M " to select cooling or heating mode.
*CFU-D422, auto change mode for cooling and heating.
3 speed ( Low
, Middle
Auto speed: difference between set point and ambient temperature;
1 K - Low
Fan will keep running when power on (except economy mode).
The backlight will light up 120 seconds when any button pressed.
The icon "
" displays when valve open.
All last saved parameters will be kept after power failure or switch off.
Contacts close > economy mode ; Contact open > normal mode
Fan output is synchronised with valve output (economy mode).
In parameter setting, select display ambient temperature or set point.
In parameter setting, adjust measured temperature to +3, +2, +1, 0, -1, -2, -3.
When unit is off and measured temperature < 5°C , unit start in heating mode
automatically until tempaerature reached 7°C.
In parameter setting, select external sensor or built-in sensor.
To lock or unlock the buttons, press
When key lock is activated, buttons will no action when press it.
E1 : Internal sensor short circuit.
E3 : External sensor short circuit.
for 5 seconds to enter " p-setting mode ". Press
Error
Key lock
Valve output
Economy
Auto speed
High
, High
) / Auto
; 2 K - Middle
; 3 K - High
&
simultaneously and hold 5 seconds.
E2 : Internal sensor open circuit.
E4 : External sensor open circuit.
,
button to change setting. If button is not pressed over
[ factory setting rt ]
[ factory setting 0 ]
[ factory setting OFF ]
[ factory setting 35°C ]
[ factory setting 5°C ]
[ factory setting Int ]
[ factory setting 28°C ]
[ factory setting 15°C ]
28
84
M
(
>
>
)
.
to change over from
*available on corresponding models
60
2
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