Trane mP30 Owner's manual

Installation
Operation
Maintenance
mP30 CONTROL
FOR PRECISION AIR CONDITIONERS
PKG-SVX09A-E4

INSTRUCTION MANUAL
UG30 CONTROL
2 (44) mP30-UG30 - Rev. 1.5 - Date: 18-03-2004 EN
SOCIÉTÉ TRANE
BP 6-1, rue des Amériques
88191 Golbey Cedex
FRANCE
http://www.trane.com
Release: 1.5 Date: 18 – 03 - 2004
Checked by:

INSTRUCTION MANUAL
UG30 CONTROL
mP30-UG30 - Rev. 1.5 - Date: 18-03-2004 EN 3 (44)
CONTENTS
Page
Program identification 4
Warnings 4
General characteristics 5
Lay-out of Uniguard Base UG30/mP30 circuit 6
Inputs and outputs 7
Optional sensors 8
Optional circuits 8
Lay-out of CP1 circuit 9
Display 16
Keyboard 17
Information on display when unit is OFF 18
Unit start-up conditions 19
Switching the unit ON and OFF 19
STATUS MASK 20
Information on display when unit is ON 20
Unit status display 21
Access to parameters when consulting or programming 22
Changing the Password 27
Hardware configuration 28
Operation hour-counter 29
Exceeding hour-counter threshold 30
Maintaining the humidifier cylinder 30
Remote control of unit
Connecting more than one unit
31
32
Temperature set points 33
Humidity set points 34
Calibration and setting 34
Clock/dater – Time-bands 35
Delays due to alarm signals 35
Serious alarms 35
Active alarms 35
Reading the alarms historic record 36
Alarm codes description 40
Default values 43
Memory reset 44
Appendix:
Flowchart for UG30/mP30 masks – Access with USER password
44
Flowchart for UG30/mP30 masks – Access with FACTORY password

INSTRUCTION MANUAL
UG30 CONTROL
4 (44) mP30-UG30 - Rev. 1.5 - Date: 18-03-2004 EN
PROGRAM IDENTIFICATION
This manual describes the characteristics of the standard UG30 and mP30 control for conditioners.
The software version can be read by repeatedly pressing key until your reach the "Hr" parameter; this
information must be supplied to the technical service centres when they are called in for a job.
Version Parameter
1.6 Hr
The setting of some parameters on a special unit version may differ from those described in this manual.
WARNINGS
Do not install the controls in places with the following characteristics:
- relative humidity above 80%;
- exposed to aggressive and polluting atmospheres (e.g.: sulphur or ammonia gasses, salt mists,
fumes) to avoid corrosion and/or oxidation;
- high magnetic and/or radio frequency interference (therefore, avoid installing units near transmitter
aerials);
Cut power before beginning work on the circuit in the case of assembly, maintenance or
replacement jobs.
In general, all the instructions found in the unit’s Installation, Use and Maintenance Manual apply.
WARNING: In direct expansion air-conditioners with a three-phase power supply, the controller's power may be cut if
the phase sequence relay (RSF) is tripped.

INSTRUCTION MANUAL
UG30 CONTROL
mP30-UG30 - Rev. 1.5 - Date: 18-03-2004 EN 5 (44)
CHARACTERISTICS
UG30/mP30 is an electronic control for full management of precision air conditioners, for both chilled water (CW-
CW/S) and direct expansion (DX-DX/S) versions with 1 or 2 compressors.
The control consists of a user interface and a power circuit, both fitted inside a single container.
The display shows the unit’s operating status and main parameters by means of symbols and alphanumeric codes
consisting of one letter and one number:
1, 2…: probe parameters;
r1, r2 …: adjustment parameters (e.g. r1 = cooling set-point);
c9, CA…: compressor management parameters;
F9, FA…: fan management parameters;
P1, P2…: alarm management parameters;
H1, H2…: general configuration parameters.
All control parameters are set in the factory according to the type of unit and configuration; programming is effected
by a hardware key or via a serial line. To change parameters, the operator may use the keyboard on the front panel.
USER or FACTORY parameters are available depending on whether they are accessible to the user or reserved for
authorised personnel.
TECHNICAL SPECIFICATIONS
Power supply : 24 Vac ±15% 50/60 Hz
Maximum absorbed current: 200 mA with 800 mA T (delayed) internal fuse
Transformer power for UG30/mP30 and digital inputs: 10 VA
Operating conditions: -10 ÷ +54°C with 20-80 non condensating R.H.
Storage conditions: -10 ÷ +70°C with 0-80 non condensating R.H.
Alarms are active when the relevant input is open (not powered)
Input ID1, for remote ON/OFF, powers up the unit when it is itself powered.

INSTRUCTION MANUAL
UG30 CONTROL
6 (44) mP30-UG30 - Rev. 1.5 - Date: 18-03-2004 EN
LAY-OUT OF UNIGUARD BASE UG30/mP30 CIRCUIT
The figure shows the rear of the UG30/mP30 control, with input and output terminals.
The following are shown in the figure:
- low down: connectors ("1" - "2" - "3"), with the analogue and digital inputs and outputs;
- lay-out for the clock circuit (optional);
- lay-out for the RS485 serial circuit (optional);
1
C5 C3/4 OUT3 C1/2 Y1 Y2
OUT5 OUT4 OUT2 OUT1 GND GND
2
G0 B4 B2 B3 ID2 ID4 ID6 ID8 ID10
G B1 GND +V ID1 ID3 ID5 ID7 ID9
3
C6 NO6 C7
NC6 NO7

INSTRUCTION MANUAL
UG30 CONTROL
mP30-UG30 - Rev. 1.5 - Date: 18-03-2004 EN 7 (44)
INPUTS AND OUTPUTS
The following tables shows information on inputs and outputs according to the type of selected unit.
CW = 'MERCURY' chilled water air conditioner;
CW/S = 'JUPITER' chilled water air conditioner;
DX = 'MERCURY' direct expansion air conditioner with 1 or 2 compressors.
DX/S = 'JUPITER' direct expansion air conditioner.
DIGITAL INPUTS – Connector 2
Equipped with 10 24Vac digital inputs.
CW - CW/S DX - DX/S
ID1 Remote ON/OFF Remote ON/OFF
ID2 Air flowswitch Air flowswitch
ID3 Dirty filters flowswitch
(standard issue on CW/S unit, optional extra on CW unit)
Dirty filters flowswitch
ID4 Safety thermostat for heating elements Safety thermostat for electrical resistors
ID5 Alarm from temperature and humidity external sensors, and from
flooding sensor (optional)
Alarm from temperature and humidity external sensors, and from
flooding sensor (optional)
ID6 Humidifier alarm from circuit CDA303 Humidifier alarm from circuit CDA303
ID7 -- Circuit 1 high pressure
ID8 -- Circuit 1 low pressure
ID9 -- Circuit 2 high pressure
Compressor thermal breaker
ID10 -- Circuit 2 low pressure
GO Common for inputs 1 –10
ANALOGUE INPUTS – Connector 2
Equipped with 3 analogue inputs for NTC sensors and 1 active probe 0-1Vdc / 4-20mA.
CW - CW/S DX - DX/S
B1 Room temperature Room temperature
B2 External air temperature for summer/winter changeover External air temperature for summer/winter changeover
B3 Room relative humidity Room relative humidity
B4 STM delivery temperature STM delivery temperature
GND Common for analogue inputs
+V Power supply for active sensors 14Vdc (max.30mA)
DIGITAL OUTPUTS
The card is equipped with 7 outputs including: 1 200 Vac relay, with exchange contact; 1 200 Vac relay, with
normally opened contact.
Digital outputs – Connector 1
CW - CW/S DX - DX/S
DO1 C1/2 – OUT1 Cold water valve + (opens) Compressor circuit 1
DO2 C1/2 – OUT2 Cold water valve - (closes) Compressor circuit 2
DO3 C3/4 – OUT3 1st stage for heating elements/
Hot water valve + (opens)
1st stage for heating elements/
Hot water valve + (opens)
DO4 C3/4 – OUT4 2nd stage for heating elements/
Hot water valve - (closes)
2nd stage for heating elements/
Hot water valve - (closes)
DO5 C5 – OUT5 Fan
Triggering by fire-smoke sensor
Fan
Triggering by fire-smoke sensor
Digital outputs with relays – Connector 3
CW - CW/S DX - DX/S
DO6 C6-NO6-NC6 Serious alarm Serious alarm
DO7 C7-NO7 Dehumidifying solenoid-valve (CW)
Available for non-serious alarm warning (on CW/S)
Dehumidifying solenoid-valve (DX)
Available for non-serious alarm warning (on DX/S)
ANALOGUE OUTPUTS – Connector 1
Equipped with a 0-10Vdc analogue output and 1 phase cut-out output.
CW - CW/S DX - DX/S
Y1 Y1 – GND Humidifier control Humidifier control
Y2

INSTRUCTION MANUAL
UG30 CONTROL
8 (44) mP30-UG30 - Rev. 1.5 - Date: 18-03-2004 EN
OPTIONAL SENSORS
The presence of sensors depends on the units configuration and version..
If a sensor is connected to a pre-installed conditioner, one of the “FACTORY” parameters described below must be
modified.
Prob SENSORS Default
1B2 sensor present (external air temperature)
0 = absent
1 = NTC
0
2Sensor B3 present (room humidity)
0 = absent
2 = 4-20 mA
0
3Sensor B4 present (delivery temperature)
0 = absent
1 = NTC
0
OPTIONAL CIRCUITS
UG30/mP30 is designed to be use with the following optional circuits:
- RS485 serial circuit making it possible to connect the control to a supervision or remote assistance network;
- Clock circuit, allows the user to see date and time, indispensable for operating programmes linked to time (time
bands and memorising of the time and date of an alarm event).
RS485 SERIAL CIRCUIT
To use UG30/mP30 in an RS485 supervision system or remote assistance network, the optional RS485 circuit must
be fitted as follows:
- cut power to the unit
- disconnect the connectors from terminal boards "1", "2" and "3";
- unscrew the rear cover of the control;
- fit the RS485 circuit on the connector at the rear of the control;
- break the plastic protection to allow access to terminals GND, RX/TX+, RX/TX-;
- re-position the cover and connectors;
- make the serial line connection observing the indicated polarities;
- power up.
Set the UG30/mP30’s address in the network with parameter Ho and the speed with parameter HP (see paragraph
“REMOTE CONTROL OF UNIT “.
Consult manual for Supervision Systems.
CLOCK CIRCUIT
To enable the clock, time bands and the alarm historic record function, fit the optional circuit and follow the
procedure below:
- cut power to the unit
- disconnect the connectors from terminal boards "1", "2" and "3";
- unscrew the rear cover of the control;
- fit the clock circuit on the connector at the rear of the control;
- re-position the cover and connectors;
- power up.
- set date and time and delete the alarms historic record.
HUMIDIFIER INTERFACE CIRCUIT – CP1
The CP1 electronic circuit is fitted on the electrical panel of the unit. It enables the management of the humidifier
and signals any alarm statuses.
The circuit is not provided with a display, and, therefore, signals are produced by lighting of coloured LEDs.

INSTRUCTION MANUAL
UG30 CONTROL
mP30-UG30 - Rev. 1.5 - Date: 18-03-2004 EN 9 (44)
LAY-OUT OF CP1 CIRCUIT
The CP******** electronic card has been designed to
control the immersed-electrodes OEM KUE* humidifiers.
Since the CP********* card is uncovered, it must be
installed so as to avoid any accidental contact with
people during
normal operating conditions and to prevent the danger of
possible high tension or high temperature points.
As to installation refer to the user manual of the
immersed-electrodes OEM series.

INSTRUCTION MANUAL
UG30 CONTROL
10 (44) mP30-UG30 - Rev. 1.5 - Date: 18-03-2004 EN
TECHNICAL SPECIFICATIONS
Power supply:24Vac, from -15% to +10%, 50/60Hz
Consumption:9VA (solenoid valves not included) - 35VA max (valves included)
Operating conditions: 0T60°C; <90%r.H. non condensing
Storage conditions: -10T70°C; <90%r.H. non condensing
Environmental pollution: normal
Digital outputs (relays: micro-interruption 1C type):
- electrode power supply (cards CP1* and CP2*): 2 relays SPST, 250Vac 20A resistive (12A inductive cos = 0,4);
min. number of commutations: 100.000
-electrode power supply (cards CP3* and CP4*): 1 relay SPST, 250Vac 5A (2A); min. number of commutat.:
100.000
- cumulative alarm relay: 1 relay SPST, 250Vac 5A (2A)
Digital inputs:
- AB-AB (remote ON/OFF start consent): external potential-free contact:
ON= closed contact (Rmax of closed contact= 50, Imax through closed contact= 10mA);
OFF= open contact (Vmax across open contact= 32Vdc)
- VR-SET (humidistat): external potential-free contact for the production on/off control. Used as an alternative to
SET-GND connection (read below under “Analogue input”).
START OF PRODUCTION= closed contact (Rmax of closed contact= 50, Imax through closed contact= 10mA);
STOP OF PRODUCTION= open contact (Vmax across open contact= 10Vdc)
- Manual drainage: 2 external complementary potential-free contacts:
ON-GND: closed= control enabled (drainage OFF), Rmax of closed contact= 50, Imax through closed contact=
5mA
open= control disabled (drainage ON), Vmax across open contact= 5Vdc
DR-GND: closed= drainage ON (disabled control), Rmax of closed contact= 1, Imax through closed contact= 0.5A
open= drainage OFF (enabled control), Vmax across open contact= 24Vac
Analogue input:
- SET-GND (steam production request from ext. regulator; input impedance 15k): 0/10V (default), 2/10V, 0/1V.
Used as an alternative to VR-SET (read above under “Digital inputs”)
Protection index: IP00
Maximum cable length (TAM inputs, level, conductivity): shorter than 10m
NEW UE HUMIDIFIERS CP1 CARD HARDWARE CONFIGURATION
(EXTERNAL TAM)
CP1 card used in single-phase OEM (JUPITER unit): 2 relays (2x250V AC) to break phase and neutral (no external
contactor needed).
CP1 card used in three-phase OEM (MERCURY, MERCURY BIG units): 1 relay (1x250V AC) used to supply power
to electrode supply contactor's coil.
MEANING WHEN LED FLASHES
Steam production: YELLOW LED (transitory production “short flashes” - steady-state production “long flashes”).
JUPITER UNIT CP1 CONFIGURATION (SD/SU 0151 – 0251 – 0331………..)
JUPITER unit (single-phase OEMs): For all sizes, the Cp1 card must be configured for a nominal steam
flow of 3 kg/h

INSTRUCTION MANUAL
UG30 CONTROL
mP30-UG30 - Rev. 1.5 - Date: 18-03-2004 EN 11 (44)
FACTORY SETTINGS
. Dip switches type A (alarm relay and maximum production settings)
A1 A2 A3 A4
ON X ¾
OFF X ¾¾
Dip switch 1-not used
Dip switch 2 set to ON: Relay not energized (contact
open) with at least one alarm active,otherwise energized
(contact closed)
Dip switches 3-4 set to OFF: 100% of nominal
steam flow ( 3 kg/h)
Dip switches type B (auxiliary functions and automatic draining time)
B1 B2 B3 B4 B5 B6 B7 B8
ON
OFF
Dip switch 1 set to OFF: complete draining after 7 days without production being requested (function
enabled)
Dip switch 2 set to OFF: automatic draining with or without electrode power supply (electrodes not
supplied)
Dip switch 3 set to OFF: the new production setpoint is reached by means of evaporation cycles when
demand is reduced by less than 25%. Draining is achieved by means of evaporation cycles.
Dip switch 4 set to OFF: cylinder exhaustion advance warnings (alarms are displayed when the cylinder
is approaching exhaustion).
Dip switches 5-6 set to OFF: automatic draining time (default setting)
Dip switches 7-8 set to OFF: Evaporation time threshold (default setting)
The “TA RATE” dip switches are left in their default positions since an external TAM is being used
Jumper setting on external TAM
In the JUPITER models used, the jumper must be placed in position 100 (end of scale is quantified in
amperes 100=10 amperes)
MERCURY/MERCURY BIG UNIT CP1 CONFIGURATION (MD/MU ……._ D.G. _ 3 )
MERCURY/MERCURY BIG unit (three-phase OEM):
Nominal steam flow will be reduced by 50% (4 kg/h) for
MERCURY 1-2 frame and by 75% (6 kg/h) for
MERCURY 3-4 frame and MERCURY BIG units.
Dip switches type A (alarm relay and maximum
production settings)
A1 A2 A3 A4
ON X
OFF X

INSTRUCTION MANUAL
UG30 CONTROL
12 (44) mP30-UG30 - Rev. 1.5 - Date: 18-03-2004 EN
Dip switch 1-not used
Dip switch 2 set to ON: Relay not energized (contact open) with at least one alarm active,otherwise energized
(contact closed)
Dip switch 3 set to ON
Dip switch 4 set to OFF
. Dip switches type A (alarm relay and maximum production settings)
A1 A2 A3 A4
ON X
OFF X
Dip switch 1-not used
Dip switch 2 set to ON: Relay not energized (contact open) with at least one alarm active, otherwise energized
(contact closed)
Dip switch 3 set to OFF
Dip switch 4 set to ON
Dip switches type B (auxiliary functions and automatic draining time)
B1 B2 B3 B4 B5 B6 B7 B8
ON
OFF
Dip switch 1 set to OFF: complete draining after 7 days without production being requested (function
enabled)
Dip switch 2 set to OFF: automatic draining with or without electrode power supply (electrodes not
supplied)
Dip switch 3 set to OFF: the new production setpoint is reached by means of evaporation cycles when
demand is reduced by less than 25%. Draining is achieved by means of evaporation cycles.
Dip switch 4 set to OFF: cylinder exhaustion advance warnings (alarms are displayed when the cylinder
is approaching exhaustion).
Dip switches 5-6 set to OFF: automatic draining time (default setting)
Dip switches 7-8 set to OFF: Evaporation time threshold (default setting)
The “TA RATE” dip switches are left in their default positions since an external TAM is being used
Jumper setting on external TAM
IN MERCURY/MERCURY BIG MODELS, THE JUMPER MUST BE PLACED IN POSITION
100 (END OF SCALE IS QUANTIFIED IN AMPERES 100=10 AMPERES)
50% of nominal steam flow FRAME 1-2
BIG
75% of nominal steam flow FRAME 3-4 & BIG

INSTRUCTION MANUAL
UG30 CONTROL
mP30-UG30 - Rev. 1.5 - Date: 18-03-2004 EN 13 (44)
LIST OF ALARMS
Alarm state is active when the LEDs flash, and their type is described in the following tables.

INSTRUCTION MANUAL
UG30 CONTROL
14 (44) mP30-UG30 - Rev. 1.5 - Date: 18-03-2004 EN

INSTRUCTION MANUAL
UG30 CONTROL
mP30-UG30 - Rev. 1.5 - Date: 18-03-2004 EN 15 (44)

INSTRUCTION MANUAL
UG30 CONTROL
16 (44) mP30-UG30 - Rev. 1.5 - Date: 18-03-2004 EN
DISPLAY
The display shows the main controlled quantities and the operating status of the unit and its components.
Below are the symbols on the display, and their meanings.
The symbol indicates that the display is showing the temperature and relative humidity
values instantaneously measured in the environment, plus the relevant measurement
units.
Temperature may be in Centigrade of Fahrenheit (see paragraph “DISPLAY OF UNIT
STATUS”.
When you access the parameter programming mode (providing the symbol is absent)
the value and code of the parameters are shown (set-point,….).
Programming (reading and modification of parameters).
If flashing, the value of a parameter is being modified.
Always lighted: operating mode – automatic
or manual.
OFF status from hour bands.
Unit status (from outside contact):
- ON : unit enabled;
- OFF : unit on stand-by.
Activation or disabling of the unit is obtained
through a remote command (with parameter
HE=1) only.
OFF status from remote command
Display of operating hours of devices and
clock functions. Day of the week (1 = Monday,….7 = Sunday)
An alarm status is present. If P4≠0 (see paragraph “READING OF ALARMS HISTORIC RECORD”) is
selected, the buzzer is active.
Dehumidification activated. Heating activated. Indicates heating power
as the opening % of the hot water valve ( )
or as the number of activated heating
elements.
Ventilation activated.
Humidifier activated; indicates the steam
production percentage.
Cooling activated. Indicates cooling power
as the opening % of the cooled water valve
() or as the number of activated
compressors.
Indicates the compressor operation hour-
counter.
All keys locked. To unlock the keyboard,
access with the USER password and reset
the USER Hi parameter to 0 value (see
paragraph “THE KEYBOARD”).
PASSWORD input requested.

INSTRUCTION MANUAL
UG30 CONTROL
mP30-UG30 - Rev. 1.5 - Date: 18-03-2004 EN 17 (44)
KEYBOARD
The main control statuses (power ON, alarm active, and unit ON) are shown to the user by the lighting of keys on
the front panel
ON
OFF (green light) The unit is ON.
(red light) Machine in alarm status.
(yellow light) Power ON: the control is powered.
Display information:
ON
OFF
Changes unit status: if ON, pressing the key puts the unit on Stand-by; vice-versa, if
the unit is on stand-by, pressing the key will turn ON the unit.
In case of an alarm (the symbol will appear on the display ), it enables the alarm
to be shut off. The alarm sound is heard only when the parameter P4 is other than zero
(see “ACTIVE ALARMS”).
When the power is returned ti the unit press the button in order to reset default values.
When programming, parameter values can be increased
When programming, parameter values can be reduced.
When programming, you can select the value of a parameter, modify it, and confirm its
value after modification.
Takes you back to the STATUS MASK to display the unit’s operating status.
Used to scroll through the list of menus in sequence: "Prob", "SetP", "Com", "FAn",
"ALAr", "GLb", "Cloc", "AlPG".
If this key is pressed repeatedly, the following are shown cycle-wise: current time, date,
room air temperature, operation hour-counters, and the software version.
Functions as an “Exit” key to return to the previous mask.
For scrolling parameters in sequence in the following menus: "Prob", "SetP", "Com",
"FAn", "ALAr", "GLb", "Cloc", "AlPG".
2 sec
If held down for 2 seconds, it resets the alarm provided the alarm cause was
eliminated.
If pressed down together for 5 seconds (as from the STATUS MASK) you can access
the programming mode for reading and modifying FACTORY parameters.
( + )5sec
If pressed down together for 5 seconds the hour-counters can be reset (but only if the
display shows the hour-counter parameter in the USER parameters programming
mode).
5 sec
If pressed for 5 seconds, you can access the programming mode for reading and
modifying USER parameters.
( + )
( + )
Used for adjusting the contrast of the LCD display according to the visual angle being
used (starting with the STATUS MASK)
If the keys shown here are pressed simultaneously, contrast is increased or reduced.

INSTRUCTION MANUAL
UG30 CONTROL
18 (44) mP30-UG30 - Rev. 1.5 - Date: 18-03-2004 EN
The functions associated with the keys can be disabled by setting the USER Hi=1 parameter (see paragraph
“ACCESS TO PARAMETERS WHILE CONSULTING OR PROGRAMMING”).
GLb GENERAL INFORMATION Minimum Maximum Measurement
unit
Default
Hi Prevents unauthorised operators from modifying parameters (the “padlock”
symbol is shown).
0 = no lock
1= lock out of all functions for modifying parameters, and resetting alarms
and hour-counters (except access to the USER password and keyboard
power down) – the padlock symbol is shown on the display).
0 1 flag 0
INFORMATION ON DISPLAY WHEN UNIT IS OFF
STATUS MASK
When the unit is powered up but not running, the STATUS MASK is shown on the display indicating the following
active fields:
A. Room temperature, room relative humidity (with humidity sensor only);
B. The indication:
• “” and " ": unit turned OFF from a remote contact or a
Supervisor;
• "unit turned OFF according to set hour bands.
C. Unit turned OFF due to alarm status:
MENU
PARAMETER
DESCRIPTION

INSTRUCTION MANUAL
UG30 CONTROL
mP30-UG30 - Rev. 1.5 - Date: 18-03-2004 EN 19 (44)
UNIT START-UP CONDITIONS
In order for the unit to be Started-up it is necessary that there are no active alarms, that the control programme
receives power and that one of the following conditions is verified:
• Check that the yellow light of key is lighted (control powered up);
• Check if the red light of key is OFF (no alarm activated);
• The operator must have pressed key
ON
OFF so that the green light on the key is lighted and the fan symbol
appears on the display;
• if the remote input was selected (USER parameter HE=1), digital input ID1 must be in the closed contact
position. The words on the display refer to the status of the conditioner.
• if the supervisor is connected and the unit is configured (see USER parameters Ho and HP), the unit must be
enabled by the supervisor;
• If using daily or weekly hour bands, they must enable power up of the control;
SWITCHING THE UNIT ON AND OFF
The unit can be switched ON in one of the following modes:
Local MODE from keyboard: the unit is commanded by the
ON
OFF push-button (when first pressed, the unit starts,
and when pressed again, it stops.
Start-up can be delayed by a time period equal to the value of the USER HG parameter.
In Direct expansion units, the control commands the compressor to start so that the starting and stopping cycles are
not too close. Compressor start-up can be delayed with respect to pressure of the ON/OFF key (also see parameter
FACTORY c7).
The unit’s current status is stored in the memory; when power is restored, the unit returns to its status before power
failure, and restarts if it had been running.
GLb GENERAL INFORMATION Minimum Maximum Measurement
unit
Default
HG
Delayed start up. During this phase all unit components remain off. 0 300 sec 0
Com COMPRESSOR Minimum Maximum Measurement
unit
Default
C7
Compressor start-up delayed by start-up of fan. 0 300 sec 60
The stop of the unit’s fan is delayed with respect to pressure of the ON/OFF push-button by a time period equal to
FACTORY parameter Fd (default = 10 seconds). While the unit is OFF, the symbol flashes on the display.
Fan FANS Minimum Maximum Measurement
unit
Default
Fd
Fan switch-off delay (FACTORY). 0 900 sec 10
Automatic MODE: the control is configured so that the unit is started and stopped as follows:
1. a remote ON/OFF contact (the symbol “ ” appears on the display);
2. a supervision system (possible only in units equipped with a serial circuit);
3. programmable hour bands (only in units equipped with a clock circuit).

INSTRUCTION MANUAL
UG30 CONTROL
20 (44) mP30-UG30 - Rev. 1.5 - Date: 18-03-2004 EN
STATUS MASK
The unit’s function parameters (temperature, humidity, ….) can be read by pressing key
INFORMATION ON DISPLAY WHEN UNIT IS ON
STATUS MASK
When the unit is running, the STATUS MASK is shown on the display, with the following active fields:
B. Room temperature, room humidity (with humidity sensor only);
If the measured temperature and humidity values are incorrect, the sensors
can be calibrated as described in paragraph “SENSOR CALIBRATION”.
C. Currently operating functions: the following symbols are lighted according
to work conditions:
D. Unit commanded from a remote contact or a Supervisor.
E. Fans operating automatically.
On standard units (with F1=0 parameter) the fans always run at 100%
therefore, the symbol displayed on the right is always OFF.
F. Abnormal status:
• “”: turns on during alarm event;
• "": flashes if the threshold of a work hour-counter was
exceeded.