EVCO EVB1256N9D - Manual (Page 83)

EVCO S.p.A. EVBOX1 | Installation guide ver. 1.3 | Code 144BOX1E134
page 83 of 92
Pr5
Vapour pressure probe error
Solutions:
- check that the probe is the 4-20 mA type
- check the device-probe connection
- check the vapour pressure
Main consequences:
- the electronic expansion valve will be open the percentage set with parameter h17
- the alarm output will be activated (provided that parameter u1 and/or parameter u11 is set at 3)
Pr4
Evaporation temperature probe error
Solutions:
- check that the probe is the PTC, NTC or Pt 1000 type; see parameter P0
- check the device-probe connection
- check room/inlet air temperature
Main consequences:
- the electronic expansion valve will be open the percentage set with parameter h17
- the alarm output will be activated (provided that parameter u1 and/or parameter u11 is set at 3)
rtc
Clock error
Solutions:
- set the date, time and day of the week
Main consequences:
- if parameter d8 is set at 4, the device will operate as if it were set at 0
- the “HACCP” function will not provide information regarding the date and hour in which the alarm was
signalled
- the “energy saving” function n real time function will not be activated in real time
- the alarm output will be activated (provided that parameter u1 and/or parameter u11 is set at 3)
When the cause of the error disappears, the device restores normal operation, except for clock error (“rtc” code), which requires the
date, time and day of the week set.