Foster FHG 3L User Manual

Service Manual

ISO 14001

ISO 9001

Display Case Service

Manual

1

Contents

Environmental Management Policy

1

Disposal Requirements

1

User Operation

2

Alarms and Warnings

2

Information Menu

3

Service Access and Parameters

4

Parameter Definitions

3 to 5

Parameters

6 to 7

Probe Resistance Values

5

Technical Specification

7

Faults and Possible Solutions

8

Wiring Diagrams

9 to 15

Environmental Management Policy for Service Manuals and Duets.

Product Support and Installation Contractors

Foster Refrigerator recognises that its activities, products and services can have an adverse impact upon the
environment.
The organisation is committed to implementing systems and controls to manage, reduce and eliminate its adverse
environmental impacts wherever possible, and has formulated an Environmental Policy outlining our core aims. A
copy of the Environmental Policy is available to all contractors and suppliers upon request.

The organisation is committed to working with suppliers and contractors where their activities have the potential to
impact upon the environment. To achieve the aims stated in the Environmental Policy we require that all suppliers
and contractors operate in compliance with the law and are committed to best practice in environmental
management.

Product Support and Installation contractors are required to:

1. Ensure that wherever possible waste is removed from the client’s site, where arrangements are in place all
waste should be returned to Foster Refrigerator’s premises. In certain circumstances waste may be disposed
of on the clients site; if permission is given, if the client has arrangements in place for the type of waste.

2. If arranging for the disposal of your waste, handle, store and dispose of it in such a way as to prevent its
escape into the environment, harm to human health, and to ensure the compliance with the environmental law.

Guidance is available from the Environment Agency on how to comply with the waste management ‘duty of
care’.

3. The following waste must be stored of separately from other wastes, as they are hazardous to the environment:
refrigerants, polyurethane foam, oils.

4. When arranging for disposal of waste, ensure a waste transfer note or consignment note is completed as
appropriate. Ensure that all waste is correctly described on the waste note and include the appropriate six-digit
code from the European Waste Catalogue. Your waste contractor or Foster can provide further information if
necessary.

5. Ensure that all waste is removed by a registered waste carrier, a carrier in possession of a waste management
licence, or a carrier holding an appropriate exemption. Ensure the person receiving the waste at its ultimate
destination is in receipt of a waste management licence or valid exemption.

6. Handle and store refrigerants in such a way as to prevent their emission to atmosphere, and ensure they are
disposed of safely and in accordance with environmental law.

7. Make arrangements to ensure all staff who handle refrigerants do so at a level of competence consistent with
the City Guilds 2078 Handling Refrigerants qualification or equivalent qualification.

8. Ensure all liquid substances are securely stored to prevent leaks and spill, and are not disposed of to storm

drains, foul drain, surface water to soil.

DISPOSAL REQUIREMENTS

If not disposed of properly all refrigerators have components that can be harmful to the environment. All old
refrigerators must be disposed of by appropriately registered and licensed waste contractors, and in accordance
with national laws and regulations.

2

Ensure 20mm clearance between the
bottom of the shelves and the product.

Do not obstruct air channels

User Operation Guidelines

Start Up.

The cabinet is pre set at the factory to operate in normal ambient conditions and maintain the temperature in the
cabinet at -1+2 degrees.

Checking the temperature settings
Check the setpoint by pressing the FNC key briefly, Sett will be displayed, press the OK Key the setpoint value will
displayed.
Press the FNC key to return to normal temperature view or leave for 5 minutes to return automatically.

Defrosting
The cabinet will automatically defrost 6 times per day and when on defrost the controller will display

On completion the display will change to until the normal operating temperature
is achieved.

Alarms and Warnings

Thermostat probe failure. Call your Foster Authorised Service Company.

Evaporator probe failure. Call your Foster Authorised Service Company.

Air probe temperature failure. Call your Foster Authorised Service Company.

Safety switch probe failure. Call your Foster Authorised Service Company.

Safety switch probe failure. Call your Foster Authorised Service Company.

Safety switch is ON and cabinet lights are OFF (alarm signal). Indicates the condenser may need
cleaning. Switch the cabinet OFF, lift of the bottom front cover and clean the condenser using a
soft brush and a vacuum cleaner. Replace the cover and switch the power back on. If the

Interruption in the mains supply.

The cabinet will start automatically after a power cut
or an interruption in the power supply.
The vaporisation tray at the rear of the unit may
overflow during a power cut.

Loading the cabinet
When loading the cabinet ensure that the air is
retained with no obstruction to the airflow.
Do not place product in front of the inlet and outlet
grills and must not protrude over the front edges
of the shelves.
Improper loading will effect the operation of the
cabinet.

problem persists call your Foster Authorised Service Company.

Cabinet switches OFF due to overheating. Indicates the condenser may need cleaning. Switch
the cabinet OFF, lift of the bottom front cover and clean the condenser using a soft brush and a
vacuum cleaner. Replace the cover and switch the power back on. If the problem persists call
your Foster Authorised Service Company.

Controller

3

Information Menu

Pressing and releasing FNC will access the information menu, use the UP or DOWN keys to scroll through and
press OK to display the value.

The first in the menu is Sett; this indicates the set value, press OK to display the value.
Release OK and Nd will be displayed; this indicates the next defrost time in hours and minutes, press OK to
display the value.
Release OK and Pb1 will be displayed; this is the temperature indicated by the Thermostat Probe, press OK to
display the value.
Release OK and Pb2 will be displayed; this is the temperature indicated by the Evaporator Probe, press OK to
display the value.
Release OK and Pb3 will be displayed; this is the temperature indicated by the Cabinet Probe, press OK to display
the value.
Release OK and Pb4 will be displayed; this is the first Condenser Alarm Probe, press OK to display the value.
Release OK and Pb5 will be displayed; this is the second Condenser Alarm Probe, press OK to display the value.
(Only used on models with two condensing units)
Release OK and Con will be displayed; this indicates which compressor is running. (Most cases have only 1
compressor but some have 2)
Release OK and C1t will be displayed; this indicates haw many hours the first compressor has been running.
Release OK and C2t will be displayed; this indicates haw many hours the second compressor has been running.

Press FNC to return to the main display.
User Menu

Press and hold FNC for 5 seconds to enter the user menu use the UP or DOWN keys to scroll through and press
OK to display the value.

See the cabinet parameters on page 4 for the correct settings.

Service Access and Parameters

To access press and hold OK for 5 seconds and the display will show 0000.
The password is 1953.
Set the first number by using the UP or DOWN key, once selected press OK to move to the next number.
Once the number is completed correctly press OK to access the parameters and use the UP and DOWN keys to
change the values. Once the change has been completed press OK to move to the next parameter.

Parameter Definitions

Set Point values for group 1- folder (St1)
St1 Set point value

The set point value for the first set of control parameters.
dlF1 Differential

The temperature difference for the stopping and starting of the compressor. Must be a positive value

dlt1 Time interval between defrosts
dEt1 Maximum duration of defrost.
dSt1 Temperature at which the defrost is terminated
dt1 Drying time after the termination of a defrost

Set Point values for group 2- folder (St2)
St2 Set point value

The set point value for the first set of control parameters.
dlF2 Differential

The temperature difference for the stopping and starting of the compressor. Must be a positive value

Dlt2 Time interval between defrosts
dEt2 Maximum duration of defrost.
dSt2 Temperature at which the defrost is terminated

4

dt2 Drying time after the termination of a defrost
The group 2 values are only used on selected models.

Service Menu

Settings folder (Set)
SetC Parameter List

Set point value group for user menu 1 and 2
UloC Keyboard Lock

Locks the controller and disables the user menu and manual defrost.
St1 Set Point Value

Set point for the first control settings
SL1 Lower Set Limit

Minimum temperature set point for the first control settings
SH1 Upper Set Limit

Maximum temperature set point for the first control settings
C1 Compressor Mode

1 = One compressor: 1 = Two compressors: 3 = Compressor Cycling.

If more than one compressor is fitted both will run until the setpoint value is reached. After this the
compressor with the most operating hours stops. When the cabinet temperature rises and reaches the
restart temperature both compressors will run.

St2 Set Point Value
Set point for the second control settings

SL2 Lower Set Limit
Minimum temperature set point for the second control settings

SH2 Upper Set Limit
Maximum temperature set point for the second control settings

C2 Compressor Mode
1 = One compressor: 1 = Two compressors: 3 = Compressor Cycling.

If more than one compressor is fitted both will run until the setpoint value is reached. After this the
compressor with the most operating hours stops. When the cabinet temperature rises and reaches the
restart temperature both compressors will run.

dSnC Defrost synchronization
Probe folder (SEn)
SC Amount of Probes

The number of probes fitted to this model

dlSP Local Display
Allows the selection of a particular probe temperature to be displayed on the controller.
1 = Thermostat probe; 2 = Evaporator probe; 3 = Cabinet probe; 4 and 5 = Condenser alarm probes

dECP Resolution

Allows for a decimal point to be displayed.

0 = Not in use; 1 = in use
FC Filter Factor

This is a constant parameter used to stabilise the reading shown on the display. The value is always the

oFFS Display Temperature Offset
Allows for the cabinet probe and LCD display to be adjusted up or down to suit certain site requirements

C1Pd Condenser Overheat Probe 1
Selects the probe used.

same and it keeps the readings stabile.

5

C2PD Condenser Overheat Probe 1
Selects the probe used.

Compressor Folder (CP)
d Defrost Mode

Selects the type of defrost used
0 = Electrical Defrost; 1 = Hot gas defrost

L on Min. Working Time
Minimum working time for the compressor

H on Max. Working Time
Maximum working time for the compressor

oFFt Compressor off-time
Compressor off time if maximum working time (H on) is achieved

CoFF Min. Down Time
Minimum down time of compressor

rAtE Cooling Rate
Percentage of the cooling frequency in probe failure

2dlF Compressor Difference (Not used)
Condenser Overheat Folder (OH)
AL Alarm Temperature

Temperature at which the condenser alarm will be activated

Alt Alarm Temperature Delay

Time in minutes that the alarm will be delayed

Sd Shutdown Temperature
Temperature at which the cabinet turns itself off due to high condenser temperature.

Sdt Shutdown Temperature Delay
Time delay before the cabinet shuts down due to too high condenser temperature

Net Folder (nEt)
nlD Device Identification
CAL1 Thermostat Probe Calibration

Calibration according to factory test run.

Standard Setting Folder (SdFt)
Press OK to restore the controller to the standard settings (NOTE; not the cabinet’s factory settings)