Thetford SHB981 Series Operating instructions

1
Build-in cooking hob
Topline hybrid glass hobs
SHB981XXZ Series dual fuel
For use with mains electricity and Universal LPG
INS1021Z -0-
User and installation instructions
Please read and keep for future reference
For use in Australia
THETFORD AUSTRALIA PTY LTD
41 LARA WAY CAMPBELLFIELD VIC
TEL: [phone] FAX: [phone]
www.thetford-europe.com

2
CAUTION
•Appliance and accessible parts become hot during use. Avoid
touching the heating elements or pan supports when in use.
•The use of a gas cooking appliance results in the production of
heat, moisture and products of combustion in the room in which
it is installed. Ensure that the kitchen is well ventilated especially
when the appliance is in use. Keep natural ventilation holes open
or install a mechanical ventilation device (mechanical extractor
hood).
•Prolonged intensive use of the appliance may call for additional
ventilation by opening of a window or more effective ventilation
by increasing the level of mechanical ventilation where present.
•Do not use or store flammable materials in the appliance storage
drawer or near this appliance.
•Do not spray aerosols in the vicinity of this appliance whilst it is in
operation.
•This appliance is not intended for use by persons (including
children) with reduced physical, sensory or mental capabilities or
lack of experience or knowledge, unless they have been given
supervision or instruction by a person responsible for their
safety.
•Children less than 8 years of age shall be kept away unless
continuously supervised.
•Children shall not be permitted to play with the appliance.
•Cleaning and user maintenance shall not be made by children
without supervision.
•Unattended cooking on a hob with fat or oil can be dangerous
and may result in fire. Do not leave the appliance unattended
when in use.
•Never extinguish a cooking fire with water, switch off the
appliance and cover the flames with a lid or fire blanket.
•Danger of Fire: Do not store items on the cooking surface.
•The use of inappropriate hob guards can cause accidents and
may affect safe combustion of the appliance.

3
CAUTION
•Do not modify this appliance. Do not make any adjustments
unless such work is carried out by authorized personnel, the
manufacturer or their representative. No parts other than those
supplied by the manufacturer shall be used on this appliance.
•Do not allow cooking vessels to overlap the edges of the
appliance – use the correct sizes of pans and position them
centrally over the burners.
•Do not use harsh abrasive cleaners or sharp metal scrapers to
clean the glass since they can scratch the surface, which may
result in shattering of the glass.
•Do not use steam cleaners or pressure washers to clean the
appliance. Refer to cleaning and maintenance instructions.
•This appliance is for cooking purposes only. Where this
appliance is installed in marine craft or in caravans, it shall not
be used as a space heater.
•This appliance is not intended to be operated by means of an
external timer or separate remote-control system.
•Do not allow oils, fats or food residues to build up on the
appliance – clean the appliance after each use.
•If the supply cord becomes damaged it must be replaced by the
manufacturer or agent in order to avoid a hazard.
•Do not heat sealed tins of food, they could explode.
•Do not leave empty pans on a heating zone.
•Do not use kitchen foil on any part of the hob, it can melt and
cause damage to the hob surface.
•If the glass surface becomes cracked, switch off and disconnect
the appliance from the electrical supply to avoid the possibility
of electric shock and contact your Service Agent.
•Metal objects such as knives, forks, spoons and lids must not
be placed on the hob surface since they can become very hot.
•This appliance must be earthed.

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INTRODUCTION
This appliance is designed for cooking foods and any other use is incorrect and
may be dangerous. Failure to install the appliance correctly or improper use will
invalidate any warranty or liability claims.
This appliance must only be installed by a qualified installer or engineer in
accordance with the relevant local and national regulations in force. Failure to
install the appliance correctly could invalidate any warranty or liability claims and
lead to prosecution. Please refer to the methods of installation and use supplied
with this appliance.
Our policy is one of continuous development and improvement. Specifications
and illustrations may change without notice, subsequent to publication.
Provision of ventilation
The use of a gas cooking appliance results in the production of heat, moisture
and products of combustion in the room in which it is installed. Ensure that the
area where the appliance is used is well ventilated especially, when the
appliance is in use. Keep natural ventilation holes open or install a mechanical
ventilation device (mechanical extractor hood).
Prolonged intensive use of the appliance may call for additional ventilation, for
example opening of a window, or more effective ventilation, for example
increasing the level of mechanical ventilation where present.
The room containing the cooker shall be ventilated in accordance with all local
and national regulations in force.
Initial Cleaning
Before using the hob for the first time, check the power supply is switched off and
use a dampened soft cloth to remove any soiling or residual factory lubricants.
Once clean apply a thin coating of ceramic glass cleaner conditioner to the glass
surface and polish with a clean dry cloth.
The conditioner provides a protective surface coating which will make cleaning
the hob easier. Occasionally reapplying the conditioner will reduce the
accumulation of deposits from cooking.
If the glass surface becomes discoloured due to cooking deposits, clean the
glass using a mild cream cleaner or use a ceramic hob scraper. Wipe the surface
clean and re-apply the cleaner conditioner. See Care and Maintenance section.
This appliance is approved for use with Universal LPG.
The burners on this appliance have fixed aeration and no adjustment is required.
The burners should flame as follows;
ULPG: Normally on initial lighting, a small amount of yellow tipping will
occur which increases slightly as the burner heats up.

5
OPERATION OF THE GAS BURNERS
The burners are controlled individually and each is monitored by a thermocouple
probe. In the event the burner flames are accidentally extinguished, turn off the
burner control and do not attempt to re-ignite the burner for at least one minute.
1. Ensure gas and electric supply is connected and turned on.
2. Push in the control knob and turn anticlockwise to full rate – large flame ( ),
see Fig 1.
3. Continue depressing the knob whilst holding a lighted match or taper to the
burner.
For models fitted with ’Auto-Spark’ the procedure is similar except burner
ignition is automatic whilst the knob is depressed.
4. After the burner is lit continue depressing the knob for approximately 10 - 15
seconds.
5. Release the knob and turn it to the required heat setting.
6. If burner has not lit within 15 seconds, release knob and wait at least 1
minute before repeating operations (2) to (5).
7. To turn off, rotate the control knob until the line on the knob is aligned with
the dot on the control panel.
8. Always make sure the control knobs are in the off positions when you have
finished using the hotplate burners.
The gas burners will accept minimum pan sizes of Ø 100mm. A minimum gap of
10mm must be maintained between pans and the pans must not overlap the
edges of the appliance.
Fig. 1 - Control Positions, Gas Burners
OFF FULL RATE LOW RATE

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GLASS SYMBOL DESCRIPTIONS
OPERATION OF THE INDUCTION HOB
Cooking on Induction
Cooking with an Induction Hob is different to a conventional hob which has either
heating elements or hotplates. An induction hob uses powerful electro magnets
which are located below the glass surface. When a pan manufactured from
magnetic material is placed directly above an electro-magnet, energy is induced
into the metal of the pan. This energy causes the metal pan to become hot and is
sufficient to provide the heat for cooking. Since heat for cooking is created inside
the pan, only the area of glass in direct contact with the pan will become very hot.
To ensure you achieve maximum cooking efficiency from your Induction hob we
recommend the use of pans which are specifically made for this type of
appliance. Choose pans which show a coil symbol and state ‘Induction’ on the
underside. If however you wish to use your existing pans and are unsure if they
are suitable, you can check if they are the correct type by using a magnet. If the
magnet will attach to the base then the pan should be suitable for induction.
•Avoid old or miss-shaped pans as these may cause instability.
•Using excessively large pans may reduce performance or cause
damage.
Do not remove the pan support and enclose the burner
with a wok stand as this will concentrate and deflect heat
onto the hotplate
Do not place anything, e.g. flame tamer, asbestos mat,
between pan and pan support as serious damage to the
appliance may result
Do not use large pots or heavy weights which can bend
the pan support or deflect flame onto the hotplate

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OPERATION OF THE INDUCTION HOB
The induction heating zone is marked with a circular dotted line with the symbol
‘IN’ at the centre.
Please ensure, regardless of pan type (stainless, enameled steel, cast iron, etc)
the pan base is smooth and flat to avoid the risk of scratching the glass. Never
slide the pan across the glass surface, lift the pan to avoid scratches.
We recommend pans with a base diameter of Ø135mm to Ø220mm for the
induction heating zone.
Glass, ceramic or earthenware pans, aluminium (unless they have a special
base), copper pans and some non-magnetic stainless steel pans are not suitable
for use on Induction hobs.
Using the Induction Hob
The induction heating zone on the hob is controlled separately using the rotary
control switch (Fig 2). An LED indicator illuminates when the induction hob is
activated and when the hob is hot during or after use.
Fig. 2 – Induction Hob Controls, (with Separate Gas Controls shown).
SHB981XX Series
Start Up: Upon initial connection to the mains electricity supply, the LED
illuminates briefly with ‘8’, then ‘0’, then goes blank. As a safety feature, if the
control knob is not in the '0' (Off) position on initial connection, the LED display
will go blank. The induction unit cannot be operated until the control is reset to ‘0’
and the LED will display ‘0’ if the control is moved to any other position.
To reset the unit, rotate the control anticlockwise to the '0' position, the LED
indicator then goes blank and the induction heater is ready for use.
The induction hob will accept a minimum pan size of Ø 100mm.

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Switching On: Place a suitable pan containing food or water on the induction
heating zone. The induction heater is switched on when the control knob is
rotated clockwise from power level ‘0’ position to any higher position. When the
heater is activated the red LED light is illuminated to indicate the power setting
from ‘1’, lowest power, to ‘9’ maximum power. A graduated display around the
control knob also indicates the increasing power setting.
Selecting a Power Level: To select the desired power level for the heater, the
control knob must be rotated to the corresponding position. The control may be
moved clockwise to increase power and anti-clockwise to reduce power.
Switching Off the Heater: The heater is switched off when the control knob is
turned anticlockwise to power level ‘0’ position and the red LED light goes out.
Induction Control LED Display Functions:
U= Pan Detector – No pan detected or unsuitable pan.
H= Residual Heat Indicator – Hob surface is still hot.
L= Child Safety Lock – The appliance remains inoperative until unlocked.
0or 1-9 = Power Setting – 0= off, 1= minimum up to 9= maximum power.
A= Automatic Heat Up Function Active.
Heater without Pan or Unsuitable Pan: If an unsuitable pan is used or there is
no pan on the induction heating zone when the heater is activated, the LED light
displays U. After 30 seconds in this condition, if no suitable pan is placed on the
induction zone, the heater is automatically switched off and the LED display will
briefly display ‘0’, then go blank indicating that the heater is not active. It is
necessary to turn the control knob back to '0' position to re-set the system, before
the heater can be activated again. After use, always switch off the hob
element by its control and do not rely on the pan detector.
Power Setting: On power settings from 1 to 8, the induction unit pulses
continuously from low to high power to provide efficient heating. On setting 9 the
power of the induction heater remains at a high level.
Residual Heat: When the glass hob top is hot during cooking or after cooking
has finished, residual heat is indicated by ‘H’ on the LED light whilst the hob
surface temperature is above 60°C. Once cooled to below 60°C the LED light
goes out.
Child Safety Lock: With the control set to ‘0’, rotate the knob anti-clockwise and
hold for approximately 5 seconds until ‘L’ is shown in the LED display. The
induction heater then remains inoperative until the control is unlocked and ‘L’
remains displayed by the LED indicator. To unlock the induction heater, repeat
the locking procedure until ‘L’ disappears from the display, then return the control
to ‘0’.

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Automatic Heat-up: This function allows rapid heat up of the induction zone,
with automatic reduction to a preset level once the desired temperature is
reached. To activate, with a suitable pan in position and the control set to ‘0’,
rotate the control knob anti-clockwise briefly until ‘A’ is shown in the LED display,
then rotate the knob immediately clockwise to the desired pre-set power level.
The LED indicator shows ‘A’ and the induction unit will operate on maximum
power setting to bring the cooking zone up to temperature. The unit then
automatically reduces the power to the pre-set level which is then displayed. The
Automatic Heat-up function operates in accordance with the times shown in the
table below.
Power Level
Auto Heat-up Time at
100% power in min:sec
1
0:40
2
1:10
3
2:00
4
2:53
5
4:13
6
7:10
7
2:00
8
3:08
9
N/A
Automatic Safety Cut-Off: The maximum operating time for the heater is
automatically limited, depending on the power setting used in accordance with
the table below.
Power Level
Maximum Operating
Time in Minutes
1
520
2
402
3
318
4
260
5
212
6
170
7
139
8
110
9
90
Once the maximum operating time for any power level is exceeded, the heater is
automatically switched off and the LED indicator goes blank, indicating that the
control must be set to ‘0’ power setting to reset the system.

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LED Indication of Fault or Error Codes.
If the following Symbol┌┘ or letter E is displayed followed by a number, this
indicates that the appliance has developed an internal technical fault. Switch off
the appliance at the power supply. If the fault indication does not clear when
mains power is restored then it cannot be rectified by the user. Switch off the
power and consult your installer or qualified Service Agent.
Cooling Fan.
The induction unit has a built-in cooling fan which operates as the hob warms up.
The fan will continue to operate to cool the hob after the control knob has been
switched off. This is normal and after cooking, the mains power should be left
connected to allow the fan to cool the internal components until the fan stops
automatically.
Cooking Noises
When cooking with an induction hob, some noise may be emitted by the pan.
This is normal and depends on the type of construction of the pan which may
affect the noise. High power settings may produce the most noticeable noise.
After use
1. Switch Off the induction element by its control, do not
rely on the pan sensor.
2. Once the appliance has cooled, turn off the power supply.
Persons fitted with pacemakers or other electrical implants
The Induction Hob complies with the applicable standards on
electromagnetic interference and complies with IEC 62233:2005
Edition 1. It should not interfere with other electrical equipment
providing they also comply with this standard.
Persons who have a heart pacemaker, insulin pump, or other
electrical implant should clarify with their doctor or the producer of
the implant, whether those units comply with the regulations.
The induction appliance has an automatic overheat protection which
if activated may limit functions or completely turn off the hob.

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CARE AND MAINTENANCE
Cleaning the Hob
Check that the appliance is cool before cleaning and switch off the electricity
supply. For routine cleaning of the glass surface use a ceramic cleaning cream
and clean cloth or paper towel. After cleaning, wipe dry with a dry paper towel.
If the glass surface becomes discoloured due to cooking deposits and for
cleaning more stubborn stains, use a ceramic hob scraper. Foods with a high
sugar content must be removed promptly to prevent them from sticking or
staining the hob surface.
Clean pan supports and hob controls with warm water and detergent – they can
be removed for cleaning. Replace in the same position after cleaning. When
cleaning the gas burner rings it is essential to ensure that the holes do not
become blocked.
Wipe all hob parts dry with a clean cloth or paper towel after cleaning.
DO Allow the burners to heat before using for the first time, in order to
expel any smells before the introduction of food.
DO Clean the appliance before first use and regularly after use.
DO Remove spills as promptly as possible to prevent food residue
burning on the hob surface.
Gas Leaks
If a smell of gas becomes apparent, the gas supply should be turned off at the
cylinder IMMEDIATELY. Extinguish naked flames including cigarettes and pipes.
Do not operate electrical switches. Open all doors and windows to disperse any
gas escape. Butane/Propane gas is heavier than air; any gas escaping will
therefore collect at low level. The strong unpleasant smell of gas will enable the
general area of the leak to be detected. Check that the gas is not escaping from
an unlit appliance. Never check for leaks with a naked flame; leak investigation
should be carried out using a leak detector spray.
Servicing and Maintenance
Thetford recommend an annual inspection service by an authorised service
agent to maintain efficient appliance performance. In between annual service this
appliance needs little maintenance other than routine cleaning.
Servicing and maintenance must only be performed by authorized and suitably
qualified personnel. Refer to your local Thetford Service agent giving details of
the model & Serial No. from the appliance Data Badge.

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Fig 1 - Appliance Rating and Overall Dimensions
Appliance type SERIES 981 SHB981XXZ
Appliance overall
dimensions
L
D
H
500mm
380mm
70mm
Gas Burner
Ratings
MJ/hr kW Injector
Auxiliary Burner
3.8
1.05
0.52mm
Semi-Rapid
Burner
5.9 1.64 0.67mm
Total Gas Input
(∑) MJ/hr / kW
9.70 2.69
Induction Hob
Power
Consumption
kW
Max Amps
230 – 240V AC 50 Hz 1.4 6 Amps
Spark Ignition
12 Volt DC
Gas; Universal LPG – 2.75 kPa
ELECTRICAL ENERGY CONSUMPTION MEASUREMENT AND
CALCULATIONS IN ACCORDANCE WITH IEC 60350-2 2013.
Thetford Appliance
Model Identification
Cooking
Zones
Type of
Hob
(Watts)
Diameter of
Cooking
Zone
Energy
Consumption
ECelectric hob Wh/kg
Hybrid Hob
SHB981XXZ Series 1
1.4 kW
Induction
Hotplate
210mm 186.7

13
INSTALLATION
Fig 2a Worktop Cut-Out Details SHB981XXZ Series
The worktop cut-out and fixing holes must be prepared to the dimensions shown
below.
4 X Ø10mm fixing holes required

14
INSTALLATION
Regulations and Standards
In the interest of safety, it is a legal requirement that all gas and electrical
appliances are only installed and serviced by an approved competent person, in
accordance with the local and National standards in force. Failure to install the
appliance correctly will invalidate any warranty or liability claims and may lead to
prosecution. Particular attention shall be given to the requirements regarding
ventilation in AS/NZS 5601.2 “LP Gas installations in caravans and boats for
non-propulsive purposes”. Read the Installation and User Instructions and
warnings before installing or using this appliance.
A gas dispersal hole is recommended beneath the appliance, venting to the
outside, with minimum size Ø12mm, maximum Ø25mm, which should be
screened and baffled to prevent direct draughts to the appliance, see Fig 4.
Air vents and gas dispersal holes must be kept clear.
The manufacturer cannot accept responsibility for failure in performance if the
appliance is not installed in accordance with these instructions.
Fig. 3 Fixing the Hob into the Worktop Cut-out
1. Locate the four lengths of threaded stud, four washers and wing
nuts.
2. Screw the four threaded studs into the threaded fixings to the
underside perimeter of the hob.
3. Position appliance in worktop and attach washers & wing nuts to
the threaded studs, checking the position of the hob in worktop and
perimeter seal before tightening the wing nuts.
To ensure correct operation this appliance must be mounted into a worktop cut-
out above a self-contained cabinet which is not connected to externally vented
chambers in adjacent furniture, other than a correctly sized gas dispersal hole as
described above. Any holes for cables and pipes must have the minimum
clearances.

15
INSTALLATION
Fig 4 - Cross Section View of Appliance Mounted in a Worktop
30mm Minimum air gap from lowest part under the hob.
Non – combustible material.
Vent – 8mm x 100mm minimum.
Gas dispersal hole (Ø12mm Minimum, Ø25mm Maximum).
Ventilation
This appliance is suitable for installation into Holiday Homes, Touring Caravans
and Boats. In all cases the national standards with regard to ventilation for the
particular vehicle into which the appliance is to be installed must be adhered to.
AS/NZS 5601.2 “LP Gas installations in caravans and boats for non-propulsive
purposes” specifies appliances be installed in accordance with the
manufacturer’s instructions.
Location of Appliance
This appliance may be installed in a kitchen/kitchen diner but NOT in a room
containing a bath or a shower. LP gas appliances must not be fitted below
ground level, e.g. not in a basement

16
INSTALLATION
Position
A cutout should be prepared as shown in the enclosed diagrams – see Fig. 2 and
Fig.2a for model cutout details. We recommend the underside of the hob be
shielded, particularly if this area is to be used for storage or the installation of
another appliance. The shield should be fabricated from non-combustible
material, but if the enclosure is manufactured from combustible material there
should be a minimum air gap of 30mm between lowest part under hob and the
shield, see Fig 4.
A horizontal distance of 200mm must exist between the edge of the burners and
combustible material unless protected by a layer of non-combustible material. A
non-combustible heat shield (splash back) should be fitted onto the walls directly
behind the appliance.
Fig 5 Minimum Installation Clearances
All combustible materials such as curtains and shelves must be kept well clear of
the appliance. Any fitments such as a cupboard above the appliance must have a
minimum vertical clearance of 500mm between the fitment and the top of the pan
support – see Fig. 5.
The appliance should be fixed in place using the fixing screws provided – see
Fig. 4 for details. Make sure the appliance is fully home and level in the worktop
before fixing securely in place.

17
INSTALLATION
This appliance must be positioned free from draughts, which may affect the
combustion, and in a manner that will prevent the accumulation of unburnt gas.
When in use ensure that air vents are not inadvertently blocked or shut off.
If other appliance/s are located below the hob we recommend conducting a
temperature verification test to confirm any rise in temperature of the cabinet
materials are within allowable limits and meet requirements specified in AS 4551-
2008.
The performance of this appliance meets the requirements of AS 4551-2008,
which specifies a maximum allowable temperature rise of the furniture into which
the appliance is installed of 65oC above the ambient temperature. It is important
the installer verifies the furniture construction material and that it is suitable for
the application - i.e. plastic materials used in the construction may have a
softening point lower than the maximum allowable temperature rise specified in
the European Standard.
We recommend the installation follows the minimum dimensions shown in this
manual as any deviation could result in excessive temperature rise. If minimum
dimensions must be reduced, due to design constraints, a temperature rise test
of all furniture fitted around the unit MUST be performed. The design is deemed
permissible providing the results of this test comply with the allowable
temperature rise specified above and with all standards in force. In addition
comply with all requirements detailed within the furniture manufacturer’s material
specification. Where minimum dimensions are reduced we recommend
protecting with non-combustible material.
Gas Connection
A ¼” BSP taper gas inlet connection and pressure test point is provided
underneath the appliance – see page 6. It is recommended that the appliance is
connected by steel or copper tubing, a rubber or hose connection should not be
used. The gas inlet must be accessible with the appliance installed in accordance
with AS/NZS 5601.2. After connection the appliance must be tested for gas
soundness.
This appliance is suitable for use with UNIVERSAL LPG ONLY at 2.75 kPa
pressure. It is important that the regulator should be set to the correct pressure
for the type of gas being used. Excessive pressure must not be permitted.
If the flame on any burner should show a tendency to lift, it is possible that the
line pressure is too great. Should there be excessive yellow tips (resulting in
sooting), then it is possible that the line pressure is too low. In either case the
burners should not be used until the line pressure has been confirmed.The
burners on this appliance have fixed aeration and no adjustment is necessary.

18
INSTALLATION
Electrical Connection
Models fitted with power cord only (See Fig.6 Mains Wiring Diagram).
These appliances are supplied with a double insulated cord, type 227 IEC 53,
HO5V V-F, which is suitable for use up to 10 amps. This should be connected to
a suitable double pole switched mains supply, with 3mm minimum contact
separation at all poles. Ensure that all electrical cables and wires are routed well
clear of any heat source, including this appliance. Do not allow the cord to hang
loose into the lower compartment. The switch must be accessible after
installation.
Models fitted with plug and power cord
These appliances are supplied with a plug attached to the end of the power cord,
for connection to a switched wall mounted socket. After connection ensure the
power cord and any other electrical wires are routed well clear of any heat
source, including this appliance. Do not allow the cord to hang loose into the
lower compartment. The switched socket must be accessible after installation.
Induction Functions
The induction heater has a rotary control knob with 9 positions, from 0 = off to 9 =
high setting. High setting is automatically limited to a maximum of 90 minutes
continuous use and there is an LED indication of power on and residual heat.
Pan detection for induction heater – after 30 seconds without a pan or with an
unsuitable type of pan, the heater switches off automatically and will not reset
without the control switch first being returned to zero.
After connection, test for electrical safety. Refer to the User Instructions
and warnings enclosed and test all induction heating functions described.
Electrical Connection – 12V DC Spark Ignition
The spark ignition generator must only be connected to a suitable 12V DC
supply, e.g 12V vehicle battery. Transformers if used must be of the fixed voltage
type. Use sheathed spade connectors to connect the spark generator to the
power supply.
After installation and connection this appliance must be tested for gas
soundness, ignition of all burners including simultaneous ignition and electrical
safety. The gas supply pressure to which this appliance is connected must not
rise or fall by more than 2.5 mbar from the stated nominal, when all appliances
connected to the supply are operated simultaneously.
In the event that this appliance cannot be adjusted to perform correctly and for
any service assistance, please contact your authorised Thetford Service Agent
giving details of the model and serial number from the data badge on the
underside of the appliance, plus the date of purchase.

19
INSTALLATION
Fault Indication
Error or Fault codes in the Induction system are displayed on the LED display by
flashing ‘E’ or ‘┌┘’ symbol, followed by a number. In the event that the induction
unit detects an error or internal fault other than ‘H’ residual heat, contact the
Thetford Service Centre.
SERVICING
Do not modify this appliance. All servicing must be carried out by an approved
competent person. Before any service work is started the appliance should have
been left to cool and be disconnected from both the gas and electrical supplies.
After any service or maintenance work the appliance must be checked for both
electrical safety and gas soundness.
Thetford Ltd does not accept responsibility for loss or injury caused directly or
indirectly by incorrect use of this appliance. In accordance with our policy of
product development we reserve the right to amend designs and specifications
without prior notice.
If servicing requires removal of the appliance.
To remove the hob
(1) Isolate the mains electricity supply and disconnect appliance from the supply.
(2) Turn off the gas and disconnect the appliance from the gas supply.
(3) Disconnect the appliance from the 12V DC electricity supply.
(3) Release and remove the appliance clamping screws.
(4) Carefully lift out the appliance from the worktop and place on a suitably
protected surface.
Hob burner gas valve removal/replacement
Shut off the gas supply and disconnect the gas and electrical supplies from the
unit. Remove the hob from the worktop as above.
Remove the appropriate control knob by pulling up on the knob.
From underside of hob, unclip and remove the spark generator from the side of
the rear cover. Remove the 5 fixing screws and lift the rear cover aside. Carefully
disconnect the appropriate thermocouple at the gas valve. Unscrew the
appropriate gas supply pipe nut.
Remove the appropriate gas valve clamp by unscrewing the two screws.
Withdraw the gas valve from the underside of the hob. The circular ignition switch
actuator is a spilt collet which can be removed from the tap spindle and the tap
may then be detached from the appliance.
Replace the valve and gasket. Refit using the reverse of the above procedure.

20
SERVICING
Hob burner injector removal/replacement.
Unclip the enameled pan rest from the stainless steel burner boss and lift off.
Remove the screw in the burner cap and lift off the burner cap and skirt / flame
spreader. With a 7mm A/F socket, unscrew the injector from the bottom of the
burner mixing tube. Replace/refit using the reverse of the above procedure.
Thermocouple removal/replacement
Disconnect gas and electrical supplies and remove the rear cover as above.
From the underside of the hob, carefully disconnect the appropriate
thermocouple at the gas valve. Remove the spring clip retaining the
thermocouple at the burner.
Remove the thermocouple. Replace/refit using reverse of the above procedure.
Burner cup removal / replacement
Spark ignition wire / electrode removal.
Disconnect from gas and electrical supplies and remove the appliance from
worktop as above. Disconnect the 12v power wires from the spark generator.
Pull off the fixing clip on the burner and remove electrode from the burner cup.
Trace the electrode wire back to the generator and pull off the connector.
Replace/refit using reverse procedure.
12v Spark Generator replacement
Located on the underside of appliance. Remove all electrode wires.
Unscrew and/or unclip the spark generator and lift off the unit. Replace/refit using
reverse procedure.
Induction Components
A Thetford approved Service Agent must be consulted if any induction
components require removal or replacement. The induction control circuits and
coils are not user serviceable and are sensitive to electrostatic discharge.
Electrostatic Discharge (ESD) protection must be provided before touching any
electronic components if removing the rear cover, to prevent damage to the
induction control circuits.