ECP
300
EXPERT STEPPER
Page 32
OPERATION AND MAINTENANCE MANUAL
Rev. 01-20
THERMOSTAT OPERATING MODE
COLD CALL MODE
The COMPR. output is activated when the temperature measured by the Ambient probe reaches
or exceeds the SET-POINT value +r0 and remains active until the temperature drops below the
SET-POINT. The COMPR. output is combined with the lighting of the cold call icon.
PASSWORD FUNCTION
The password function is activated by setting a value other than 0 for the PA parameter. See
parameter P1 for different security levels.
Protection is automatically enabled after about 2 minutes of inactivity on the keyboard.
The figure 000 appears on the display. Use the up/down keys to change the number and the SET
key to confirm it.
The password entry mask 000 disappears if you do not act on the keyboard within 2 minutes.
If you forget your password, use the universal number 100.
EMERGENCY OPERATION IN CASE OF ERROR E0
(AMBIENT PROBE FAULT)
This safety mode ensures the operation of the compressor even in the event of a faulty
environment probe (error E0).
With probe error E0 and CE1 other than 0, the compressor operates in work pause mode, with
compressor ON for time CE1 and OFF for time CE2.
With CE1>0, in case of error E0, defrosts are managed as in normal operating mode.
With CE1=0 the emergency operation in the presence of error E0 remains disabled: the
compressor remains off and defrosting is inhibited to preserve the residual cold,
Eliminate the cause of error E0 as soon as possible and reactivate the normal function of the
control for a correct temperature adjustment.
MANUAL DEFROST ACTIVATION
To activate defrosting, simply press the DOWN button for more than 3 seconds; in this way the
resistance relay is activated. Defrosting is not activated if the activation conditions are not met
(defrost end temperature (d2) set lower than the temperature detected by the evaporator probe).
Defrosting will end when the defrost end temperature (d2) is reached or due to maximum defrost
duration (d3) or due to manually forced defrost stop (defrost stop key or digital input).
Temperature
Ambient
Set-point
r0
Exit
DO1
5.21
5.23
5.24
5.22
