Delta MCS-1800 Service Manual download pdf (Page 52)

MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR

Telephone 08456 448802 Fax 08456 448803 Email info@mhgheating.co.uk Web www.mhgheating.co.uk

020315 Draft

Programing a Replacement GFA Module Controller

Replacement GFA Module controller are supplied for use in any location within the cascade.

The GFA module control will require programming prior to re-commissioning the combustion.

A cascade communication error message will be displayed if the following process is not undertaken.

**Prior to undertaking any work with a PCB please earth yourself by touching a secure earth connection

within the boiler.**

1. Check the build version of the Theta Controller. Data Badge on Rear of unit. This must be >E05.

2. Check the software version of the Theta Controller by switching the unit ON and pressing and

holding the “I” Button. The version must be 20:03 V 3.3 or greater.

3. Electrically isolate the Theta Controller and all or the modules.

Disconnect the module electrical connections. Dedicated plugs are used to prevent

misapplication.

1, Locking Tab connectors. 2, BUS 1 Connectors, 3 GFA Controller Housing

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Delta MCS-1800 Service Manual Page 52