Tecnodom PERFEKT - 7. CONTROL PANEL (mod. EW961 - EW974); Control Panel Elements and Functions

USE AND MAINTENANCE MANUAL
REFRIGERATED CABINETS PERFEKT | PERFEKT PLUS
41
EN
11. DIAGNOSTICS
11.1. ALARMS
LABEL FAULT CAUSE EFFECTS TROUBLESHOOTING
E1
Probe1 faulty
(cell)
▪ reading of values
outside the
operating range
▪ faulty / shorted /
open probe
▪ Display of the E1 label
▪ Fixed Alarm Icon
▪ Disabling of the maximum
and minimum alarm
regulator
▪ Compressor operation
based on the “Ont” and
“OFt” parameters
▪ check the probe type (NTC)
▪ check the probe wiring
▪ replace the probe
E2
Probe 2 faulty
(defrost)
▪ reading of values
outside the
operating range
▪ faulty / shorted /
open probe
▪ Display of the E2 label
▪ Fixed Alarm Icon
▪ The Defrost cycle will end
due to Time out (Parameter
“dEt”)
▪ check the probe type (NTC)
▪ check the probe wiring
▪ replace the probe
AH1
HIGH Alarm
Probe 1
temperature
▪ value read by
Pb1 > HAL after
time equal to
“tAO” (see “MIN
AND MAX TEMP.
ALARMS”)
▪ Recording of label AH1 in
folder AL
▪ No effect on the adjustment
▪ Wait for the temperature
value read by probe 1 to
return below HAL.
AL1
LOW Alarm
Probe 1
temperature
▪ value read by
Pb1 < HAL after
time equal to
“tAO” (see “MIN
AND MAX TEMP.
ALARMS”)
▪ Recording of label AL1 in
folder AL
▪ No effect on the adjustment
▪ Wait for the temperature
value read by probe 1 to
return above LAL.
EA External Alarm
▪ activation of the
digital input (H11
set as an external
alarm)
▪ Recording of EA label in
▪ AL folder
▪ Fixed Alarm icon
▪ Adjustment blocked if
EAL = y
▪ check and remove the
external cause that caused
the alarm on D.I.