12
PLS Basic Air Curtains Water
GB
Alarm
Cause
Action
A.FA Motor alarm Thermal switch has deployed. One
or several motors have overheated.
(Only units with withdrawn thermal
switches.)
Check that nothing is obstructing the
unit’s air intake and exhaust. When the
overheated motor has cooled the thermal
switch shuts again and the alarm can be
reset. At repeated alarms, check the motors,
replace damaged motors.
A.ot
Over heating
alarm
The temperature in the unit has
exceeded the alarm limit for
overheating. (Only applies to units
with internal unit temperature.)
Check that nothing is obstructing the unit’s
air intake and exhaust, the function of the
actuator/valve, return water and internal
temperature sensors in the unit
Alarm
Cause
Action
E.co
Communication PLSB1(X) has no contact with
PLSUB1.
Check connection between the PLSB1(X) and
PLSUB1. Replace any modular cables.
PC board PLSB1(X) has no ID
= 0
Interrupt the power supply and select different
ID numbers for all PLSB1(X) in the system.
Two or more PLSB1(X) have
the same ID-number.
Interrupt the power supply and select different
ID numbers for all PLSB1(X) in the system.
One or more PLSB1(X) do not
have programs.
Contact technical support.
E.cF
ID-error
Two or more PLSB1(X) in
the system have different
programs.
Contact technical support.
E.rt
Room sensor
error
Error in or missing external
room sensor PLSRTX
connected to
PLSB1(X).
Always disconnect the power supply when
connecting or disconnecting sensors. Check
connection of the sensor.
E.It
Internal sensor
error
Fault on or missing internal
sensor in the unit (applies to
units with internal sensor).
Check connection of the sensor. If there is no
sensor, contact technical support.
E.ru
Room sensor
error
Fault on internal room sensor
in the control unit PLSUB1.
Check connections between PLSUB1 and
PLSB1(X). Replace any modular cables. Check
if an external sensor PLSRTX is working. If
the error is not rectified the PLSUB1 must be
replaced.
Table - Error codes
Table - Alarm
Summary of Contents for PLSB
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