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Refrigeration controller, type EET series
Automatic Heater Control
Table 22: Automatic Heater Control
Parameter name
Automatic Heater Control
Automatic Heater Control Mode
Heater low set point (°C)
Heater high set point (°C)
Heater low differential (K)
Heater high differential (K)
Energy mode delay (Mins)
System protection
Table 23: System protection
Parameter name
System Protection
Voltage Protection function
Minimum Cut-in Voltage
Minimum Cut out Voltage
Maximum cut out Voltage
Condenser Alarm Limit (°C)
Condenser Block Limit (°C)
Condenser OK Limit (°C)
Control sensor error handling type
Error Run Time (Mins)
Error Stop Time (Mins)
Zero Cross Config
© Danfoss | Climate Solutions | 2023.07
Default
Code
Min.
Max.
value
AHC
AuH
No
No
Yes
CHI
-100
-100
120
WHI
-100
-100
120
CDH
2
1
50
WDH
2
1
50
End
60
0
360
Default
Code
Min.
Max.
value
SyP
uPt
No
No
Yes
uLi
100
70
230
uL0
90
70
225
uHi
260
110
270
CAL
80
0
120
CbL
85
0
120
CoL
60
0
120
EHd
Aut
no
Aut
Ert
0
0
60
Est
0
0
60
ZC
Yes
No
Yes
Description
Automatic Heater Control / dual mode protects food items stored in cabinets instal-
led outdoors from freezing during winter. Automatic Heater Control uses the defrost
heater to increase the cabinet temperature when it goes below the cut-out temper-
ature during Cooling mode.
No: this feature is disabled
Yes: this feature is active
Heater cut-out temperature at coldest position of the spindle (thermostat knob) au-
to heating.
Heater cut-out temperature at warmest position of the spindle (thermostat knob)
auto heating.
It the difference between the heater cut-out and cut-in at the coldest position of
thermostat for auto heating.
It the difference between the heater cut-out and cut-in at the warmest position of
thermostat for auto heating.
This is the delay in minutes between the heater and the compressor operation. The
heater is not allowed to start until the number of minutes has expired after the com-
pressor has cut out and vice versa.
Description
This feature protects the compressor if the line voltage goes beyond the operating
range
The lowest voltage at which the compressor is allowed to cut-in
If the voltage goes below this value when the compressor is running, the compres-
sor will be switched off. It is to avoid sudden switching on and off of the compressor
due to voltage fluctuations. This cut-off voltage will override the compressor mini-
mum run time
When the compressor is running, it will be switched off if the voltage exceeds this
value, if the compressor is already stopped, it will remain switched off
It sets the condenser temperature at which an alarm will be generated
It sets the compressor switched off due to high condenser temperature
It sets the compressor to switch on again after having been switched off due to high
condenser temperature, respecting the minimum compressor stop time
Method to control the cooling cycle in case of cabinet air sensor error:
"No" : no sensor error handling
"SEt" : follow configured error run and stop time
"Aut" : control automatically based on past cycles time
Cooling cycle ON time in case of cabinet sensor error (active only if EHd=SEt)
Cooling cycle OFF time in case of cabinet sensor error (active only if EHd=SEt)
It enhances the relay life and avoids relay sparks during relay ON and OFF. If "Yes" is
selected, relays will be switched ON and OFF when the line voltage is closer to zero
BC320944106159en-000301 | 25
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