The sensor failure alarms “
P1
”, “
P2
” and “
P3
” switch off 10 seconds after the failure has been rectified.
The cold chamber temperature alarms “
HA
” and “
LA
” switch off when the normal values are reached again or
when defrosting begins.
The door alarm “
dA
” switches off when the door is closed.
The alarm “
CA
” switches off when the unit is turned off.
3.10. PAL/CA ALARM
Indicative of activation of digital input 13-14, means that it has been activated 2 times in 20 minutes.
(Parameters Nps = 2 did = 20).
Possible causes:
1- Analyze if the malfunction contact of the network protector 11-14 is open. If this is the case,
observe the status of the protective PR voltage led, if the LED is solid orange, protective ok. See the
rest of the states in "Network protection states" on page 18. In case of error, analyze as cause by
measuring input voltage to voltage protector A1 - A2 (single phase 230v), L1 - L2 - L3 (three phase
400v).
2- Analyze electrically low pressure switch (PB), high pressure switch (PA).
In case PB is open, indicative of stop due to low pressure, causes:
- Pressure switch error or electrical connection pressure switch.
- Coolant leak
- Compressor has started after activation due to cold demand and the liquid solenoid valve has
been closed. Analyze state coil solenoid, connection connector coil and terminals (7-0)
16
Содержание Euromon 100 Series
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