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5

 

Operating and fault displays

MCM10

68

5

Operating and fault displays

Operating state and faults can be indicated in 4 different 
ways:
• Boiler displays
• Remote fault indicator
• Via the LEDs on the MCM10 module
• Via the RC35 programming unit

5.1

Boiler displays

 For further details regarding the boiler operating and fault 
displays, see the boiler documentation.

5.2

Remote fault indicator

A fault indicator, for example, can be connected to the 
zero volt fault contact (

Æ

chapter 3.2.3, page 66). 

The remote fault indicator is also issued via an LED at the 
MCM10 (

Æ

tab. 10).

5.3

LEDs on MCM10 module

Generally, 3 different states of the overall system can be 
identified:

• Configuration (during commissioning and after a reset)
• Standard operation
• Fault.

Subject to the state of the overall system, the LEDs on the 
MCM10 module (

Æ

fig. 13) provide indications about the 

operating and fault state of individual components, and 
thereby enable specific troubleshooting (

Æ

tab. 10, 

page 68).

Fig. 13 Operating and fault indications via the LEDs

1

Green

Power ON

2

Green

Heating circuit pump (secondary circuit)

3

Red

Switching contact for remote fault indicator
230 V AC

4

Green

Communication between MCM10s

5

Green

Boiler 1

6

Green

Boiler 2

7

Green

Boiler 3

8

Green

Boiler 4

6 720 616 691-03.1TD

1

2

3

4

5

6

7

8

LED  Off 

On

Flashing

No.

Diagnosis

Remedy

Diagnosis

Remedy

Diagnosis

Remedy

1

Fault:

 no power 

supply.

Check the power 

supply.

Replace 

MCM10 module.

Operation:

 standard 

operation.

– 

2

Operation:

 pump 

OFF.

Operation:

 pump 

ON.

– 

Fault:

 pump will not 

start although the LED 

is ON, as the fuse for 

pump output has 

blown.

Replace fuse 

(

Æ

chapter 5.5, 

page 71).

Tab. 10 Operating and fault displays

Содержание 7 746 800 090-00.1O

Страница 1: ...MCM10 7 746 800 090 00 1O 6 720 616 692 11 2009 ...

Страница 2: ...rsions overview 61 2 7 8 Connection of additional modules in case of heating controllers with 2 wire BUS control 63 3 Installation 64 3 1 Installation 64 3 1 1 Wall mounting 64 3 1 2 Hooking into the mounting rail 65 3 1 3 Removal from the mounting rail 65 3 2 Electrical connections 65 3 2 1 Connection of the low voltage part with BUS connections 65 3 2 2 230 V AC connection 66 3 2 3 Remote fault ...

Страница 3: ...hese accessories exclusively in conjunction with the controllers and boilers listed Follow the wiring diagram B This accessory may require a different voltage Never connect the low voltage side to the 230 V mains or vice versa B Prior to installing this accessory Isolate the power supply 230 V AC of the boiler and of other BUS subscribers B For wall mounting never install this accessory in wet are...

Страница 4: ...B Check all components have been delivered 2 5 Accessories Here you will find a list of typical accessories Contact the manufacturer to obtain a complete overview of all available accessories Outside temperature sensor only for system version 1 Flow temperature sensor only for system versions 2 3 and 4 RC35 weather compensated heating controller with text display for controlling a heating system w...

Страница 5: ...eating circuit pump output AT 2 5 A ceramic filled with sand Measuring range flow temperature sensor C 0 100 Measuring range outside temperature sensor C 40 50 Permissible ambient temperature MCM10 C 0 50 Permissible ambient temperature flow temperature sensor C 0 100 Permissible ambient temperature outside temperature sensor C 50 100 Maximum cable length EMS BUS connections m Æ tab 7 page 65 Maxi...

Страница 6: ...59 2 6 3 Connection diagram Fig 3 Connection diagram IV I 230 VAC A D F G 0 10V H I J B C E K L M A K III A K B M M M M M M M M L II A K B M M M M L 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 M M 20 21 19 24 18 17 22 23 25 M 7 746 800 090 14 2o ...

Страница 7: ...run for all boilers This takes into account the number of hours run in heating mode as well as in DHW mode This increases the boiler service life If the power supply to the MCM10 module fails the hours run meter in the MCM10 module is reset to zero If a boiler is not able to start DHW heating for a directly connected DHW cylinder boiler fault communication fault with the MCM10 module another boile...

Страница 8: ...ng circuit pump can be connected directly to the MCM10 master module in heating systems with only 1 heating circuit When an RC35 programming unit is being used in the system the heating circuit pump must be connected to the WM10 low loss header module The heating circuit pump runs as long as at least one boiler pump is running if required set the pump run on time on the boiler according to the boi...

Страница 9: ...odule The flow temperature sensor part of the standard delivery of the WM10 is connected to the WM10 low loss header module The heating circuit pump is connected to the WM10 module 2 Modulating 0 10 V controller regulates acc to output any 4 16 Common flow temperature sensor accessory on terminals E only for internal frost protection function Heating circuit pump secondary circuit Æ fig 3 19 on te...

Страница 10: ...erature VT Flow temperature U Input voltage System version 4 Heating control with ON OFF contact In conjunction with a control unit with ON OFF contact the MCM10 module regulates the cascade output in accordance with the contact closure respectively up to maximum output by starting one boiler after another When the contact opens all boilers are shut down simultaneously The ON OFF contact of the he...

Страница 11: ...rawl plug and insert the screw until only 1 5 mm protrudes Æ fig 8 Fig 8 Top fixing screw B In the back panel of the MCM10 module create two holes for the bottom fixing screws using the 2 knock outs prepared B Hook in the MCM10 module at the top fixing screw B Mark the holes to be drilled on the wall through the knock outs created B Remove the MCM10 module DANGER From electric shock B Prior to con...

Страница 12: ...ls Colour and mechanical coding prevent interchanging of cable terminals 3 2 1 Connection of the low voltage part with BUS connections B To prevent faulty functions always wire in accordance with the connection diagram Never connect one BUS cable to another The minimum permissible cable cross section of the 2 wire BUS connection is determined by the cable length B Route all LV leads separately fro...

Страница 13: ...e boiler 3 2 5 Electrical connection of the flow temperature sensor Flow temperature sensor connection Æ fig 3 page 59 System version 1 at the WM10 low loss header module or System versions 2 3 and 4 at the MCM10 module terminal E 3 2 6 Electrical connection of an external switching contact Prior to connecting an external switching contact remove the jumper from the plug in strip 3 2 7 Disposal B ...

Страница 14: ... on the individual BUS subscribers in accordance with their installation instructions 4 3 Configuration reset During the next start the current system configuration is saved to the MCM10 module B Interrupt the power supply 230 V AC to all components in the heating system and all MCM10 modules B Open the MCM10 master module casing Æ fig 7 page 64 B Remove jumper Æ fig 4 page 63 B Ensure the correct...

Страница 15: ...ration Fault Subject to the state of the overall system the LEDs on the MCM10 module Æ fig 13 provide indications about the operating and fault state of individual components and thereby enable specific troubleshooting Æ tab 10 page 68 Fig 13 Operating and fault indications via the LEDs 1 Green Power ON 2 Green Heating circuit pump secondary circuit 3 Red Switching contact for remote fault indicat...

Страница 16: ...ller Operation communication between this MCM10 module and the previous module or the heating controller 2 wire BUS Configuration communication between 2 MCM10 modules or the heating controller 2 wire BUS Wait until the configuration has completed The LED will then be illuminated steadily Fault no communication between 2 MCM10 modules or the heating controller 2 wire BUS Check the corresponding co...

Страница 17: ...ther boiler will be enabled automatically in case of heat demand LED Off On Flashing No Diagnosis Remedy Diagnosis Remedy Diagnosis Remedy Tab 10 Operating and fault displays Display Description Remedy 5H Break in BUS communication Display in case of less than 4 installed boilers Check the cable between the boiler and the MCM10 module for a possible break Check the cable for firm seating and conta...

Страница 18: ...ally important objectives for us All legislation pertaining to the environment is strictly observed To protect the environment we use the best possible technology and materials whilst taking into account economical aspects Packaging Where packaging is concerned we participate in country specific recycling processes that ensure optimum recycling All packaging materials are environmentally compatibl...

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