C0240111-04-05-GB
7
ALARMS
Press the [ALARM] key once to enter the “alarms menu” and view the alarm message along with its code.
If there is more than one alarm, scroll the menu using the [UP] and [DOWN] keys.
In the W3000 base, “NO A” is displayed if there is no alarm, otherwise the alarm code appears.
Press any other key to exit from this menu.
The only thing the user can to is to reset the alarm.
To reset the alarm
press the [ALARM] key again and hold it down until the message “No Alarm Active”
(for W3000 or W3000 compact) or “No A” (for W3000 base) appears. If the message does not appear it
means that one or more alarm conditions are still active.
alarms table
ALARM
DESCRIPTION
details
RESET
002
Incorrect phase sequence
Faulty phase connection. Totally shuts down the
unit (only displayed if the input that detects it is
fitted)
A
003
Evaporator flow switch
x
In units with hardware that does not
distinguish between flow switch and thermal
protection, this alarm trips when the pump motor
overheats or if there is no flow to the evaporator.
The alarm automatically resets if there is no flow
but must be manually reset (on the pump) if the
pump has overheated.
x
Only displayed if the digital input is separate
from the evaporator pump thermal
protection.
No flow to evaporator.
A,M
A
005
Low inlet temperature
Enabled only in the “heat pump” mode. Low
water temperature at evaporator inlet.
S-A
006
High inlet temperature
Enabled only in the “chiller” mode.
High water temperature at evaporator inlet.
S-A
010
Evaporator antifreeze
Low water temperature at evaporator outlet. Also
specifies (except for W3000 base) which
evaporator (if more than one) is involved in the
alarm condition.
M
014
No enable signal
Only displayed if the relative input is present (see
I/O menu). Unit stops due to an external signal.
M
021
Low water charge
The evaporator outlet temperature changes too
quickly and creates a low water level in the
system.
S
022
Low water flow
The temperature difference between the
evaporator inlet and outlet is too high and creates
a low water flow from the pump
M
023
High water flow
The temperature difference between the
evaporator inlet and outlet is too low and creates
a high water flow from the pump
S
045
Condenser flow switch
No water flow to the condenser.
A
046
Recuperator flow switch
No water flow to the recuperator.
A
051
Pump 1 maintenance
Maintenance hours limit exceeded (in units with
just 1 pump, pump 1 is the evaporator pump)
S
052
Pump 2 maintenance
Pump 2 maintenance hours limit exceeded (in
units with more than one pump).
S
075
Condenser antifreeze
Low water temperature at condenser outlet.
Except for W3000 base, it also specifies which
condenser (if more than one) is involved in the
alarm condition.
M
076
Recuperator antifreeze
Risk of freezing on recuperator exchanger.
A
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