Worcester GR8700iW 30 S LPG User Instructions Download Page 12

Malfunction or failure

 

Greenstar 8000 Style – 6720883869 (2018/05)

12

• Is the cold water main turned on?
• Sealed heating system:

– Is the static system pressure (when appliance is cold) between 

1 - 1.5 bar?

• Do you have gas?

– Are other gas appliances working, gas cooker/hob for example?
– Has your credit run out on your gas pre-payment meter?

Details of your installer should be available in the Commissioning 
Checklist or can be recorded in the following section.

Installer/maintenance engineer

Table 8  

Worcester, Bosch Group

The appliance is supported in the UK and Eire by Worcester, Bosch 
Group.

Specialist service engineers are available to attend an appliance 
breakdown.

Invoices for attendance and repair work carried out on this appliance by 
any third party will not be accepted.

• No charge will be made for parts and/or labour providing:

– The appliance fault is found and the appliance is within the 

guarantee period. Reasonable evidence of this must be supplied 
on request. i.e. a completed Commissioning and service record 
and has been regularly serviced.

• A call-out charge will be made where:

– The appliance is outside the guarantee period or has not been 

serviced in accordance with the manufacturers instructions.

– Our Field Service Engineer finds no fault with the appliance.
– The cause of breakdown is misuse or with other parts of your 

plumbing/heating system, or with equipment not supplied by 
Worcester, Bosch Group.

No appliance fault is found on over 30% of all service calls.

▶ In the case of a suspected fault, refer to the basic checks earlier in this 

section.

In the event of a appliance fault or breakdown please contact Worcester, 
Bosch Group appointments team on 0330 123 9339. Your advisor will 
arrange for an engineer to call with the minimum of delay; under normal 
circumstances this will be from 1 - 3 working days (excluding weekends 
and bank holidays) for priority breakdown situations (no hot water and/ 
or heating).

9.1

Troubleshooting

If there is fault in the system, there will be a message shown on the 
display with an icon on the right up corner. The color of this icon depends 
on the severity of the fault in the system. The cause of the fault is coded 
(e.g. fault code 232) and displayed as text. 

▶ Press the  

 and 

 keys until 

Reset

 is displayed. 

The appliance starts up again and the current supply temperature is 
displayed.

If a fault persists:
▶ Contact the contractor or the customer service.
▶ Provide them with the displayed fault code and the device data (page 

 6).

9.2

Extreme cold weather

In certain instances where the condensate pipe work is run externally or 
in an unheated area, such as a garage, the condensate pipe work can be 
at risk of freezing, even if well insulated.

A frozen/blocked condensate pipe will cause the boiler to shut down. 
Worcester, Bosch Group have available helpful videos on thawing frozen 
condensate pipe work on our website in the Customer service section.

WARNING: 

Falling hazard!

Failure to follow this guidance may result in personal injury.

▶ Only attempt to thaw a condensate pipe that is at ground level and 

easily accessible.

▶ Never attempt to thaw a condensate pipe that is at height.

CAUTION: 

Risk of damage to pipe work!

Thermal shock from boiling water can damage plastic pipes.

DO NOT

 use boiling water to thaw the condensate pipe!

If the condensate pipe has frozen:
▶ Locate the blockage.

– It is likely that the pipe is frozen at the most exposed point outside 

the building or where there is an obstruction to flow. This could be 
the open end of the pipe, at a bend or elbow, or where there is a 
sag in the pipe in which condensate can collect.

– The location of the blockage should be identified as closely as 

possible before taking further action.

▶ Thaw the frozen pipe.

– The pipe can be thawed by applying a hot water bottle, a 

microwaveable heating pack (the sort used for muscular aches 
and pains) or a cloth soaked in hot water to the exterior of the 
pipe, close to the point of blockage.

– Hot water, but not boiling, can also be poured onto the pipe from 

a watering can or similar container.

– Care must be taken at pedestrian areas where this water may 

freeze and create a slip hazard.

▶ Worcester, Bosch Group have available on our website helpful videos 

in the Customer service section to aid in thawing a frozen pipe.

▶ Reset the appliance and wait two or three minutes for the appliance 

to restart.

▶ Contact Worcester, Bosch Group Appointments Team on: 

0330 123 9339, if the boiler does not restart.

▶ Contact your installer in order to find a permanent solution to the 

problem.

Installer/maintenance engineer details

Engineer name:

Company 
name:

Company 
address:

Telephone:

Email:

Summary of Contents for GR8700iW 30 S LPG

Page 1: ...6720883869 2018 05 UK IE User Instructions Gas fired condensing system boiler Greenstar 8000 Style GR8700iW 30 S NG GR8700iW 35 S NG GR8700iW 30 SB NG GR8700iW 35 SB NG...

Page 2: ...re of exceptional quality and proven reliability Our products employ the latest technologies and they are reliable extremely energy efficient offering you economical running costs and value for money...

Page 3: ...water mode 9 4 4 1 Hot water key 9 4 5 Operating the menu 9 4 6 Settings in the menu 9 5 Key accessories 10 5 1 Installing the Key 10 5 2 Key LED 10 5 3 Setting the time program 10 6 Shutdown 11 6 1...

Page 4: ...non permitted use H If you smell gas A gas leak could potentially cause an explosion If you smell gas observe the following rules Prevent flames or sparks Do not smoke use a lighter or strike matches...

Page 5: ...etc within the vicinity of the heat source Do not store or use any corrosive substances solvents adhesives chlorinated cleaning agents etc within the vicinity of the heat source H General consideratio...

Page 6: ...istration card for further details of the Worcester Bosch Group Service Contract When your appliance requires servicing please contact a Worcester Bosch Group contact centre see rear cover appointment...

Page 7: ...result in corrosion within the heating system reducing the efficiency and increasing contaminates Check for leaks on heating system pipe work and radiator valves Contact your installer or maintenance...

Page 8: ...Key accessories auto Heating is switched on and off according to programmed times for heating Advance Switch to Advance to move to the next on or off time and directly switch on or off heating Symbol...

Page 9: ...is on from the first programmed on time to the last programmed off time without programmed intermissions 1 Only available with installed Key accessories Heat time prog 1 Timer for heating Weekday s s...

Page 10: ...and confirm the Time program menu The menu items Mon Fri Sat Sun Mon Sun are displayed Possible items to change Mon Fri for change switching times for all weekdays together Mon Sun to change switchin...

Page 11: ...clearances Your installer will have provided adequate space around the appliance for operation safety and servicing maintenance access Thefollowingdetailthenecessaryclearancearoundtheappliancefor serv...

Page 12: ...ed as text Press the and keys until Reset is displayed The appliance starts up again and the current supply temperature is displayed If a fault persists Contact the contractor or the customer service...

Page 13: ...ol systems Upgrade your heating control system if necessary with the latest equipment available Roof insulation Around30 oftheheatlossfromapropertyisthroughtheroof Replace any old insulation with new...

Page 14: ...GR8700iW 30 S NG LPG GR8700iW 30 SB NG LPG GR8700iW 35 S NG LPG GR8700iW 35 SB NG LPG Condensing boiler Yes Yes Rated heat output Prated kW 30 34 Seasonal energy efficiency for central heating s 94 9...

Page 15: ...terials provided with the distribution 3 Neither the name of STMicroelectronics nor the names of other contributors to this software may be used to endorse or promote products derived from this softwa...

Page 16: ...Kingdom Tel 0330 123 9559 worcester bosch co uk TECHNICAL SUPPORT 0330 123 3366 RENEWABLE SUPPORT 0330 123 9229 CONTROLS AND CONNECTIVITY TEAM 0330 123 3641 APPOINTMENTS 0330 123 9339 SPARES 0330 123...

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