PLS PLSB, Quick Manual

11

PLS Basic Air Curtains Water

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Alarm code starts 
to flash

3 seconds

Alarm and error codes  

Overheat protection

Only applies to units with internal sensor.
The over heating protection is intended to 
restrict the exhaust temperature to +40 °C. 
At +40 °C the actuator for heat supply will 
close. Actuator will open again if the internal 
temperature drops below +35 °C. If the 
temperature continues to rise despite this, for 
example because of a faulty valve/actuator, 
the fan will start to spin at +46 °C to keep the 
temperature down.  At the same time there 
is an over heating alarm (Table - Alarm). At 
internal temperatures of +50 °C the fan runs 
at maximum speed.

If the unit cools, the heat is engaged again. 

The alarm remains in the control unit’s 
display. If the unit overheats twice within 
an hour, the alarm must be reset before 
the heating can be engaged again, the fan 
operates until the alarm is reset.

Note! In event of repeated alarms and over 

heating alarms, carry out a thorough check 
and if the fault cause cannot be found contact 
authorised service person. 

Displaying alarm and error codes

In event of alarm or error the alarm/error 
code and the unit it applies to is shown in the 
status window.  Alarm error codes see Table 
- next page. The status window alternate the 
display of the alarm/error code and faulty unit 
ID causing the problem.
 

Reset alarm

Note! Before resetting, check that the fault is 
rectified and there is nothing to prevent the 
unit from being recommissioned!

 When the fault is rectifed, the alarm is reset 

according to description below.

If "wrong" button is pressed the alarm 

display disappears but returns in status 
window after about 20 seconds. 

 At the first start up alarm and error codes 

can occur, these can usually be reset without 
action.