Heatcraft Refrigeration Products Masterlog 4 Instruction Manual

Masterlog4
User Handbook
Masterlog 4 “Version 2”
(from the 11st march 2008)

Code +050004036 Rel. 1.0 – 11/03/2008 3
OPERATING INSTRUCTIONS
MASTERLOG 4 “Version 2”
The default parameter settings for the MASTERLOG 4 (bn1) are selected for operation with chilling evaporators
equipped with an air defrost system. For a different operating mode one of the following programs may be
selected:
‘bn1’= chilling with air defrost
‘bn2’= chilling with electrical defrost
‘bn3’= refrigeration with electrical defrost
‘bn4’= ambient chilling with air defrost
‘bn5’=‘bn2’ with 2 evaporators
‘bn6’=‘bn3’ with 2 evaporators
”DO NOT USE ‘bn0’”
Proceed as follows to select one of these programs:
1. Switch off the Masterlog4.
2. Switch the Masterlog4 back on again while simultaneously pressing the “prg” button until the value ‘bn0’
appears.
3. Select the program required using the “up” and “down” keys
4. Press “set” to confirm the selection.
”Set” Key ”prg” Key “Up/Down” Keys
ATTENTION:
¾The defrost parameters [‘dI’: interval between 2 defrosts, ‘dT’: temperature at end of defrost (electrical) and ‘dP’:
maximum defrost duration] are factory-set values. Depending on use of the cold storage room, these parameters
must be modified to ensure correct defrosting of the evaporator.
¾To carry out a manual defrost cycle, press the “defrost” key for more than 5 sec.
¾The MASTERLOG 4 relays are “potential-free” contacts. To supply these contacts, it is essential to connect
terminals 1, 4, 7 and 10 as well as aux. terminals 13 and 16 if necessary (refer to the electrical wiring diagram
enclosed with the products).
¾The MASTERLOG 4 possesses three configurable inputs (terminals 22/23, 24/25 et 26/27). Input n°1
(terminals 22 and 23) may be set as an external alarm coming from the unit (parameter A4=1, except
application 2 evaporators). Some units are equipped with a standard ‘fault contact’ (refer to wiring diagram).
We recommend you connect this alarm contact to the MASTERLOG 4.
¾If the keypad is locked, modify the parameter H2 (H2=1).
IMPORTANT: Standard and modified parameters are saved in case of an electrical power failure. When
downloading a program, these values are reset in compliance with the basic parameter setting chart.

Code +050004036 Rel. 1.0 – 11/03/2008 4
1 - Wiring
Sensors: 18 - 19 Ambient probe (PROBE 1)
20 - 21 End of defrost probe (PROBE 2)
Digital inputs: 22 - 23 Digital input 1 (DI 1) - Parameters A4
24 - 25 Digital input 2 (DI 2) - Parameters A5
26 - 27 Digital input 3 (DI 3) - Parameters A9
Auxiliary: 13 - 14 AUX 1 – Parameters H1
16 - 17 AUX 2 – Parameters H5
Wiring RS485: 28 GND
29TX/RX+
30TX/RX-
Relay characteristics: Refer to chapter 8. Technical characteristics
R1=30A
R2=16A
R3=8A
R4=8A
R5=16A

Code +050004036 Rel. 1.0 – 11/03/2008 5
2 - Display
Symbols Colour Meaning with the symbol
illuminated Meaning with the symbol blinking
Amber
Compressor operational
Compressor in standby and ready
to start
Amber
Condenser fan operational
Condenser fan in standby and
ready to start
Amber
Defrost in progress
Condenser fan in standby and
ready to start
AUX Amber Auxiliary output set as AUX output Heating element blocking function
enabled at start up
(Option) Yellow At least 1 defrost is programmed in
real time
Red External alarm delayed Alarm present or alarm on digital
input immediate or delayed
Red
Malfunction (e.g. probe
disconnected)
Amber Auxiliary output set as heater Heating element blocking function
enabled at start up
Amber Activation of a continuous cycle Continuous cycle cannot be
enabled
(Option) Red HACCP function enabled New HACCP alarm memorised

Code +050004036 Rel. 1.0 – 11/03/2008 6
3 - Parameters:
3-1 . Access to parameters:
Modify the set point only
Press and hold SET for 1 second Use the up and down keys to modify the set
point
Press SET to confirm the
value
Access to all parameters
Press and hold PRG and
SET at the same time for
5 seconds
"00" is displayed Use the up and down keys to select
“22” Press SET
Save parameters Do not save parameters Cancel an alarm Manual defrost
Press and hold PRG for 5
seconds
Do not press any other
keys for 60 seconds until
the display returns to the
temperature value
Press PRG Press and hold DEF
for 5 seconds

Code +050004036 Rel. 1.0 – 11/03/2008 7
3-2 . Rotation of the parameters list menu
‘Set’= to access or quit a parameter
‘Set’= to access a block
‘Prg’= to quit a block
5s Probe
Control
Compresso
r
Defrost
Alarm
Fan
Confi
g
uration
HACCP
(OPTION)
(OPTION)
Time ran
g
e

Code +050004036 Rel. 1.0 – 11/03/2008 8
4- List of parameters:
The parameters may vary depending on the model of MD33
/: Probe parameters
Display Parameter and description Measurement
unit Min Max Bn 1 Bn 2 Bn 3 Bn 4 Bn 5 Bn 6
/2 Probe measurement delay
1=immediate response
15=delayed response - 1 15 4 4 4 4 4 4
/3 Probe display speed
0=slow
15=fast - 0 15 0 0 0 0 0 0
/4 Virtual probe (between probe 1 and probe 2)
0=Setting of probe 1
50=average between probe 1 and probe 2
100=Setting of probe 2
- 0 100 0 0 0 0 0 0
/5 Selection °C or °F
0=°C
1=°F Select 0 1 0 0 0 0 0 0
/6 Display decimal point
0=Yes
1=No
Select 0 1 0 0 0 0 0 0
/tI
Selection of probe to be displayed on controller
1=virtual probe
2=probe 1
3=probe 2
4=probe 3
5=probe 4
6=probe 5
7=set point
- 1 7 2 2 2 2 2 2
tE
Selection of probe to be displayed on a remote
display
0=no remote display present
1=virtual probe
2=probe 1
3=probe 2
4=probe 3
5=probe 4
6=probe 5
- 0 6 0 0 0 0 0 0
/P Selection of probe type
0=standard NTC (black probe)
1=high-temperature NTC (beige probe)
2=PTC
- 0 2 0 0 0 0 0 0
/A2
Configuration of probe 2
0=probe 2 absent or not used
1=product probe (used for display)
2=defrost probe
3=condensation probe
4=anti-frost probe
- 0 4 0 2 2 0 2 2
/A3
Configuration of probe 3 / digital input 1
Same as probe 2 - 0 4 0 0 0 0 2 2
/A4 Configuration of probe 4 / digital input 2
Same as probe 2 - 0 4 0 0 0 0 0 0
/A5 Configuration of probe 5 / digital input 3
Same as probe 2 - 0 4 0 0 0 0 0 0
/c1 Calibration of probe 1 °C/°F -20 20 0 0 0 0 0 0
/c2 Calibration of probe 2 °C/°F -20 20 0 0 0 0 0 0
/c3 Calibration of probe 3 °C/°F -20 20 0 0 0 0 0 0
/c4 Calibration of probe 4 °C/°F -20 20 0 0 0 0 0 0
/c5 Calibration of probe 5 °C/°F -20 20 0 0 0 0 0 0

Code +050004036 Rel. 1.0 – 11/03/2008 9
r: Setting parameters
Display Parameter and description Measurement
unit Min Max Bn 1 Bn 2 Bn 3 Bn 4 Bn 5 Bn 6
St Temperature set point °C/°F r1 r2 4 0 -18 12 0 -18
rd Differential °C/°F 0.1 20 2 2 2 1 2 2
rn Dead zone °C/°F 0.0 60 2 2 2 1 2 2
rr Hot differential relay (with dead zone) °C/°F 0.1 20 2 2 2 1 2 2
r1 Minimum set point value entered by user °C/°F -50 r2 1 -5 -25 2 -5 -25
r2 Maximum set point value entered by user °C/°F r1 200 20 8 -5 20 8 -5
r3 Operating mode
0=direct thermostat (cold) with defrost
1=direct thermostat (cold) without defrost
2=reverse thermostat (hot)
Select 0 2 0 0 0 0 0 0
r4 Variation of set point during nocturnal operation
(stn=st+r4) °C/°F -20 20 3 3 3 3 3 3
r5 Authorise recording of min. and max.
temperature values
0=not authorised
1=authorised
Select 0 1 0 0 0 0 0 0
rt Interval between temperature recordings Time 0 999 - - - - - -
rH Maximum temperature recorded °C/°F - - - - - - - -
rL Minimum temperature recorded °C/°F - - - - - - - -
c: Compressor parameters
Display Parameter and description Measurement
unit Min Max Bn 1 Bn 2 Bn 3 Bn 4 Bn 5 Bn 6
c0 Delay compressor and fan start up when the
controller is switched on Min 0 15 1 1 1 1 1 1
c1 Minimum time between 2 consecutive start ups
of the same compressor Min 0 15 6 6 6 6 6 6
c2 Minimum compressor stoppage time Min 0 15 0 0 0 0 0 0
c3 Minimum compressor running time Min 0 15 2 2 2 2 2 2
c4 Compressor running duration in case of probe
alarm (continuous cycle) Min 0 100 15 15 15 15 15 15
cc Continuous cycle duration Time 0 15 4 4 4 4 4 4
c6 Temperature alarm exclusion time after a
continuous cycle
Time 0 15 2 2 2 2 2 2
c7 Maximum Pump-Down time (vacuum
generation) Sec 0 900 0 0 0 0 0 0
c8 Compressor delayed start up after opening the
Pump-Down valve Sec 0 60 0 0 0 0 0 0
c9
Authorisation of auto-start function during
Pump-Down
0= when the valve is closed
1= each time the valve is closed + LP pressure
switch request when no cooling request is present
Select 0 1 0 0 0 0 0 0
c10 Pump-Down operation in time or in pressure
0=Pump-down in pressure with maximum time
1=Pump-down in time Select 0 1 0 0 0 0 0 0
c11 Active list of parameters (n° of ‘bn’ ) Sec 0 250 1 2 3 4 5 6

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d: Defrost parameters
Display Parameter and description Measurement
unit Min Max Bn 1 Bn 2 Bn 3 Bn 4 Bn 5 Bn 6
d0
Type of defrost
0=defrost with elec. element ends with
temperature or time
1=defrost with hot gas ends with temperature or
time
2=defrost with elec. element ends with time
3=defrost with hot gas ends with time
4= defrost with elec. element ends with time or
temperature (if defrost ends with time ED1 and ED2
are not displayed)
Select 0 4 2 0 0 2 0 0
dI Interval between 2 defrosts Time 0 250 8 8 6 12 8 6
dt1 Temperature at end of evaporator defrost °C/°F -50 200 4 4 4 4 4 4
dt2 Temperature at end of aux. evaporator defrost °C/°F -50 200 4 4 4 4 4 4
dP1 Maximum evaporator defrost duration Min 1 250 45 45 30 45 45 30
dP2 Maximum aux. evaporator defrost duration Min 1 250 45 45 30 45 45 30
d3 Delayed defrost activation Min 0 250 0 0 0 0 0 0
d4 Defrost when the controller is switched on
0=no
1=yes
Select 0 1 0 0 0 0 0 0
d5 Delay defrost when the controller is switched on Min 0 250 120 240 240 120 240 240
d6 Block display during defrost
0=alternating display of temperature and DEF
1=display temperature present before defrost
2=always display DEF
- 0 2 2 2 2 2 2 2
dd Dripping duration after defrost Min 0 15 0 4 4 0 4 4
d8 High-temperature alarm (AH) exclusion duration
after defrost and/or door open Time 0 15 1 1 1 1 1 1
d8d Alarm timer after door opening (alarm “dor”) Min 0 250 2 2 2 2 2 2
d9 Priority defrost for delayed compressor
start/stop
0=respected
1=not respected (priority defrost)
Select 0 1 0 0 0 0 0 0
d/1 Read defrost probe 1 °C/°F - - - - - - - -
d/2 Read defrost probe 2 °C/°F - - - - - - - -
dC Defrost duration time base
0=hours/minutes
1=Minutes/seconds Select 0 1 0 0 0 0 0 0
d10
Smart defrost: Compressor running time with an
evaporator temperature below D11 to start
defrost
0=function disabled
>0 =running time
dC 0 250 0 0 0 0 0 0
d11 Temperature threshold for smart defrost °C/°F -20 20 1 1 1 1 1 1
d12
Auto-adaptive advanced defrost
0=skip defrost disconnected, automatic variation
disconnected
1=skip defrost disconnected, automatic variation
connected
2= skip defrost connected, automatic variation
disconnected
3= skip defrost connected, automatic variation
connected
- 0 3 0 0 0 0 0 0
dn Average defrost duration in percentage in
relation to dt1 or dt2 - 1 100 65 65 65 65 65 65
dH Proportional variation factor of dI - 0 100 50 50 50 50 50 50

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A: Alarm parameters
Display Parameter and description Measurement
unit Min Max Bn 1 Bn 2 Bn 3 Bn 4 Bn 5 Bn 6
A0 Alarms and fans differential °C/°F 0.1 20 0.2 0.2 0.2 0.2 0.2 0.2
A1
Type of alarm threshold: low-temperature (AL)
and high-temperature (AH)
0=AL and AH threshold in relation to set point
(factory set)
1=AL and AH absolute values
Select 0 1 0 0 0 0 0 0
AL Low-temperature alarm threshold (AL) Æ
differential > 0°C if factory set °C/°F -50 200 5 5 5 6 5 5
AH High-temperature alarm threshold (AH) Æ
differential > 0°C if factory set °C/°F -50 200 5 5 5 6 5 5
Ad Temperature alarm delay (AL and AH) Min 0 250 45 45 45 45 45 45
A4
Configuration of digital input 1 Æterminals 22
& 23
0=input not used.
1=Instantaneous external alarm (IA)
2=Delayed external alarm (dA)
3=Defrost authorisation (except IR33M)
4=Start defrost with external contact
5=Door contact: Stop compressor and fans
6=Controller remote stoppage
7=Night screen contact (day/night contact)
8=Low pressure switch input for pump-down
9=Stop fans with door contact
10=Direct/reverse operation (hot/cold)
11=Light detector
12=Activation of auxiliary output
13= Door contact without light control: Stop
compressor and fans
14= Door contact without light control: Stop fans.
- 0 14 0 0 0 0 0 0
A5 Configuration of digital input 2 Æterminals 24
& 25
Same as digital input 1 - 0 14 0 0 0 0 0 0
A6 Authorisation to stop the compressor with
external alarm
0=compressor always off
100=compressor always on
Min 0 100 0 0 0 0 0 0
A7 Alarm timer with contact Min 0 250 0 0 0 0 0 0
A8 Authorisation of alarms Ed1and Ed2 (defrost
end with time)
0=no
1=yes
Select 0 1 0 1 1 0 1 1
A9 Configuration of digital input 3 Æterminals 26
& 27
Same as digital input 1 - 0 14 0 0 0 0 0 0
Ado Light control with door contact
0=off
1=on Select 0 1 0 0 0 0 0 0
Ac Condenser high-temperature alarm threshold
(CHT) °C/°F 0.0 200 70 70 70 70 70 70
AE Condenser high-temperature alarm differential
(CHT) °C/°F 0.1 20 10 10 10 10 10 10
Acd Condenser high-temperature alarm delay (CHT) Min 0 250 0 0 0 0 0 0
AF Light output switch-off timer with light detector
0=door detector
>0=room detector Sec 0 250 0 0 0 0 0 0
ALF Anti-frost alarm threshold (AFr) °C/°F -50 200 -5 -5 -5 -5 -5 -5
AdF Anti-frost alarm delay (AFr) Min 0 15 1 1 1 1 1 1

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F: Ventilation parameters
Display Parameter and description Measurement
unit Min Max Bn 1 Bn 2 Bn 3 Bn 4 Bn 5 Bn 6
F0
Fans control
0=fan always on except in phases F2, F3, Fd
1=fan thermostat controlled according to
difference between controller temperature and
evaporator temperature (in relation to F1)
2=fan thermostat controlled according to
evaporator temperature (in relation to F1)
Select 0 2 0 0 0 0 0 0
F1 Fan start up temperature °C/°F -50 200 5 5 5 5 5 5
F2 Fan control according to compressor
0=fan on when the compressor is off
1=fan off when the compressor is off
Select 0 1 0 0 0 0 0 0
F3 Fan operation during defrost
0=fan on during defrost
1=fan off during defrost Select 0 1 0 1 1 0 1 1
Fd Fans stoppage time after dripping Min 0 15 0 2 2 0 2 2
F4 Condenser fan switch off temperature °C/°F -50 200 40 40 40 40 40 40
F5 Condenser fans differential °C/°F 0.1 20 5 5 5 5 5 5
h: Configuration parameters
Display Parameter and description Measurement
unit Min Max Bn 1 Bn 2 Bn 3 Bn 4 Bn 5 Bn 6
H0 Serial address - 0 207 1 1 1 1 1 1
H1
Operating mode of relay 4
0=relay open in case of alarm
1=relay closed in case of alarm
2=auxiliary output: Open or close relay 4 by
pressing the AUX key
3=light output
4=auxiliary evaporator defrost output
5=pump-down valve output
6=condenser fan output
7=output for compressor star/delta start up
8=auxiliary output if the controller is off
9=light output is open if the controller is off
10=no function associated with this output
11=controller reverse (hot) output with dead
zone
12=2nd compressor output
13=2nd compressor output with rotation
Select 0
13
1 1 1 1 4
4
H2
Keypad and/or remote control authorisation
0=Prohibit SET (modification of parameters type
F) and modification of the set point
1 =authorise all
2= Prohibit SET (modification of parameters type
F), modification of the set point and modification via
remote control
3=Prohibit modification via remote control
4=Prohibit UP/AUX, SET (modification of
parameters type F) and DOWN/DEF (defrost)
5= Prohibit UP/AUX, SET (modification of
parameters type F), DOWN/DEF (defrost) and
modification of set point.
6= Prohibit UP/AUX, SET (modification of
parameters type F), DOWN/DEF (defrost) and
modification of set point.
Select 0 6 1 1 1 1 1 1
H3 Remote control parameter access code
0=access to parameters without code - 0 255 0 0 0 0 0 0

Code +050004036 Rel. 1.0 – 11/03/2008 13
Display Parameter and description Measurement
unit Min Max Bn 1 Bn 2 Bn 3 Bn 4 Bn 5 Bn 6
H4
Buzzer operation
0=in case of an alarm
1=always off
Select 0 1 0 0 0 0 0 0
H5
Operating mode of relay 5
0=relay open in case of alarm
1=relay closed in case of alarm
2=auxiliary output: Open or close relay 4 by
pressing the AUX key
3=light output
4=auxiliary evaporator defrost output
5=pump-down valve output
6=condenser fan output
7=output for compressor star/delta start up
8=auxiliary output if the controller is off
9=light output is open if the controller is off
10=no function associated with this output
11=controller reverse (hot) output with dead
zone
12=2nd compressor output
13=2nd compressor output with rotation
Select 0 13 10 10 10 11 10 10
H6
Blocking of keys:
0=all keys enabled
1=set disabled
2=down key disabled
3=set and down key disabled
4=up key disabled
5=up key and set disabled
6=up and down keys disabled
7=up, down and set keys disabled
8=prg disabled
9=prg and set disabled
10=prg and down key disabled
11=prog, down key and set disabled
12=prg and up key disabled
13=prg, up key and set disabled
14=prg, up and down keys disabled
15=all keys disabled
- 0 255 0 0 0 0 0 0
H8
Selection of the light or auxiliary output for
activation of the time range
0=time range linked to the light
1=time range linked to the auxiliary output
Select 0 1 0 0 0 0 0 0
H9
Validation of set point variation with the time
range
0=not enabled (tof set point +r4)
1=enabled (ton set point normal)
Select
0
1 0 0 0 0 0 0
Hdh
Heating element blocking at start up
differential °C/°F -50 200 0 0 0 0 0 0

Code +050004036 Rel. 1.0 – 11/03/2008 14
HA: HACCP alarm parameters (OPTIONAL)
Display Parameter and description Measurement
unit Min Max
HAn
Number of HA alarm events recorded - 0 15
HA
Time/date of last HA recorded - -
y__ Year Year 0 99
M__ Month Month 1 12
d__ Day Day 1 7
h__ Hour Hour 0 23
n__ Minute Min 0 59
t__ Duration Duration 0 99
HA1
Time/date of last HA recorded - - -
y__ Year Year 0 99
M__ Month Month 1 12
d__ Day Day 1 7
h__ Hour Hour 0 23
n__ Minute Min 0 59
t__ Duration Duration 0 99
HA2
Time/date of last HA recorded - - -
y__ Year Year 0 99
M__ Month Month 1 12
d__ Day Day 1 7
h__ Hour Hour 0 23
n__ Minute Min 0 59
t__ Duration Duration 0 99
HFn
Number of HF alarm events recorded - 0 15
HF
Time/date of last HF recorded - - -
y__ Year Year 0 99
M__ Month Month 1 12
d__ Day Day 1 7
h__ Hour Hour 0 23
n__ Minute Min 0 59
t__ Duration Duration 0 99

Code +050004036 Rel. 1.0 – 11/03/2008 15
Display Parameter and description Measurement
unit Min Max
HF1
Time/date of last HF recorded - - -
y__ Year Year 0 99
M__ Month Month 1 12
d__ Day Day 1 7
h__ Hour Hour 0 23
n__ Minute Min 0 59
t__ Duration Duration 0 99
HF2
Time/date of last HF recorded - 0 -
y__ Year Year 0 99
M__ Month Month 1 12
d__ Day Day 1 7
h__ Hour Hour 0 23
n__ Minute Min 0 59
t__ Duration Duration 0 99
Htd
HACCP alarm delay
Htd=0 function disabled Min 0 250
td: Defrost time parameters (OPTIONAL)
Display Parameter and description Measurement
unit Min Max
td1
Defrost 1 time range - - -
d__
Day
0=disabled
1=Monday
2=Tuesday
3=Wednesday
4=Thursday
5=Friday
6=Saturday
7=Sunday
8=Monday to Friday
9=Monday to Saturday
10=Saturday and Sunday
11=Every day
Day 0 11
h__ Hour Hour 0 23
n__ Minute Min 0 59
td2
Defrost 2 time range - - -
d__ Day Day 0 11
h__ Hour Hour 0 23
n__ Minute Min 0 59

Code +050004036 Rel. 1.0 – 11/03/2008 16
Display Parameter and description Measurement
unit Min Max
td3
Defrost 3 time range - - -
d__ Day Day 0 11
h__ Hour Hour 0 23
n__ Minute Min 0 59
td4
Defrost 4 time range - - -
d__ Day Day 0 11
h__ Hour Hour 0 23
n__ Minute Min 0 59
td5
Defrost 5 time range - - -
d__ Day Day 0 11
h__ Hour Hour 0 23
n__ Minute Min 0 59
td6
Defrost 6 time range - - -
d__ Day Day 0 11
h__ Hour Hour 0 23
n__ Minute Min 0 59
td7
Defrost 7 time range - - -
d__ Day Day 0 11
h__ Hour Hour 0 23
n__ Minute Min 0 59
td8
Defrost 8 time range - - -
d__ Day Day 0 11
h__ Hour Hour 0 23
n__ Minute Min 0 59
ton
Light illumination/auxiliary time range - - -
d__
Day
0=disabled
1=Monday
2=Tuesday
3=Wednesday
4=Thursday
5=Friday
6=Saturday
7=Sunday
8=Monday to Friday
9=Monday to Saturday
10=Saturday and Sunday
11=Every day
Day 0 11
h__
Hour Hour 0 23
n__
Minute Min 0 59

Code +050004036 Rel. 1.0 – 11/03/2008 17
Display Parameter and description Measurement
unit Min Max
tof
Light/auxiliary off time range - - -
d__
Day (same as ton) Day 0 11
h__
Hour Hour 0 23
n__
Minute Min 0 59
tc
Time/date programming - - -
y__
Year Year 0 99
M__
Month Month 1 12
d__
Day Day 1 31
u__
Day of the week
1=Monday
2=Tuesday
3=Wednesday
4=Thursday
5=Friday
6=Saturday
7=Sunday
Day 1 7
n__
Hour Hour 0 23
t__
Minute Min 0 59

Code +050004036 Rel. 1.0 – 11/03/2008 18
5 – List of alarm codes
Code Description Display icon Alarm relay Buzzer Reset
Before any intervention, always check the wiring.
rE Controller virtual probe damaged or disconnected Flashing On On Automatic
E0 Ambient probe S1 damaged or disconnected Flashing Off Off Automatic
E1 Defrost probe S2 damaged or disconnected Flashing Off Off Automatic
E2 Probe S3 damaged or disconnected Flashing Off Off Automatic
E3 Probe S4 damaged or disconnected Flashing Off Off Automatic
E4 Probe S5 damaged or disconnected Flashing Off Off Automatic
‘---‘ Probe not validated None Off Off Automatic
LO Low temperature alarm Flashing On On Automatic
HI High temperature alarm Flashing On On Automatic
AFr Anti-frost alarm Flashing On On Manual
IA Instantaneous alarm with external contact Flashing On On Automatic
dA Delayed alarm with external contact Flashing On On Automatic
dEF Defrost in progress On Off Off Automatic
Ed1 Defrost on evaporator 1 finished with time None Off Off Automatic/manual
Ed2 Defrost on evaporator 2 finished with time None Off Off Automatic/manual
Pd Maximum pump-down time alarm Flashing On On Automatic/manual
LP Low-pressure alarm Flashing On On Automatic/manual
AtS Pump-down automatic start up Flashing On On Automatic/manual
cht Condenser high temperature pre-warning None Off Off Automatic/manual
CHT Condenser high temperature alarm Flashing On On
Manual
dor Door open too long alarm Flashing On On Automatic
Etc Internal clock defective Flashing Off Off Automatic
EE Machine parameters Eprom error Flashing Off Off Automatic
EF Operating parameters Eprom error Flashing Off Off Automatic
HA HACCP alarm type HA Flashing Off Off Automatic
HF HACCP alarm type HF Flashing Off Off Automatic
rCt Controller validated for remote programming None Off Off Automatic
Add Automatic address attribution procedure in progress None Off Off Automatic
Prt Report print-out in progress None Off Off Automatic
ccb Start continuous cycle request Indication
ccE End continuous cycle request Indication
dFb Start defrost request Indication
dFE Stop defrost request Indication
On On Indication
Off Off Indication
rES Reset manual-reset alarms; reset HACCP
alarms; reset temperature monitoring Indication
n1 - n6 Indicates an alarm on units 1-6 present in the system Flashing On On Automatic
dnL Download in progress Indication
d1 - d6 Download errors on units 1-6 Flashing Off Off

Code +050004036 Rel. 1.0 – 11/03/2008 19
6 – Spare parts:
*Controller Masterlog 4 with 2 probes (ambient and end of defrost)
Æcode PDEL01957
*Ambient probe
Æcode PDEL00490
*End of defrost probe
Æcode PDEL00455
7 – Miscellaneous:
7 – 1 ÆTest NTC probe for damage:
Temp. °C -35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Value KΩ144 111 86 68 53 42 34 27 22 18 15 12 10 8
7 – 2 ÆSet lighting parameters:
Use AUX 2 (relay 5)
Parameter: H5=3
Bulb connected between terminals 17 & 2
Note: the key must be pressed and held for 2s to switch the lighting on or off.
7 – 3 ÆConnection of the defrost element:
Connect “Element” contactor coil between terminals 8and 2
7 – 4 ÆConnection of heating element for wine cellars:
Connect “Element” contactor coil between terminals 17 and 2
7 – 5 ÆOperation with 2 Masterlog4 Æ1 master and 1 slave:
Master Slave
PF contact “NO” ÆÆ connection to ÆÆ Digital input available:
of element contactor if terminals 22 &23 ÆA4=4
ifterminals24&25ÆA5=4
ifterminals26&27ÆA9=4
Interval between 2 defrosts: Interval between 2 defrosts:
Parameter ‘’dI’’=6 hours Parameter ‘’dI’’=8 hours
Note: When using an external defrost timer, the configuration is identical to above except that the master is replaced
by a timer.

Code +050004036 Rel. 1.0 – 11/03/2008 20