Pego 100N MASTER, Use And Maintenance Manual

Page: 32 / 36

PLUS 300 EXPERT U THR
Pag. 32
USE AND MAINTENANCE MANUAL
Rev. 01-18
DIAGNOSTIC
In the event of a fault the
PLUS300 EXPERT U THR controller warns the operator by
displaying an alarm code and emitting a warning sound via the buzzer inside the control
console.
If alarm conditions arise, the display will show one of the following messages:
ALLARM
CODE
POSSIBLE CAUSE OPERATION TO BE PERFORMED
E0
Temperature sensor fault

Check the room temperature
sensor.

If the problem persists replace the
sensor.
E1 Humidity sensor fault

Check the humidity sensor.

If the problem persists replace the
sensor.
E2
Defrost sensor fault
(In this case eventual defrosts will last as d5)

Check the defrost sensor.

If the problem persists replace the
sensor.
E3
Eeprom alarm
An error in the EEPROM memory has been
detected.
(all output deactivated except the alarm ones)

Switch system off and back on
again.
E4
Software compatibility error

Check for proper match between
MASTER board and console
board.
E6
Flat battery alarm

Replace lithium battery (CR2032
type) of the Console.
Ec
General alarm (e.g. overheat or max pressure
switch)
(All outputs, except alarm, if present, are
deactivated)

Check compressor absorption.

If the problem persists, to contact
the technical assistance service.
En
No connection between the Console and the
MASTER
board.

Check the connection between
the two units.

If the problem persists, to contact
the technical assistance service.
Eu
Minimum or maximum humidity alarm.
A humidity higher or lower to that set for minimum or
maximum humidity alarm has been reached in the
ambient (
See variables AU1 and AU2, user
programming level )

Check humidity management.

The probe does not correctly
detect the humidity.
Et
+
Temperature
on display is
flashing
Minimum or maximum temperature alarm.
A temperature higher or lower to that set for
minimum or maximum temperature alarm has been
reached in the ambient (
See variables At1 and At2,
user programming level )

Check the compressor status.

The probe incorrectly detects the
temperature or the stop/start
control of the compressor does
not work.
Ed
Limit Timeout for dehumidification

Check humidity management.

The probe does not correctly
detect the humidity.
CHAPTER 8: DIAGNOSTIC
8.1