© MHG Heating Ltd
MHG Heating Ltd, Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey, KT20 5LR
P:0845 6448802 F:0845 6448803 E:
W: www.mhgheating.co.uk
010617
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18.0 Module Operation Indication
Communication Operation Indications
The RED LED on the OCI420 communication clip mounted on the front of each LMU64
module controller flashes to indicate the detected operational status of the module
dictated by the LPB communication from the ProCon HT Masters RVS43 143 Cascade
Manager.
LED FLASH STATUS
INTERPRETATION OPTIONS
LED ON Constantly
OCI420 not configured to operate with LMU64
LED OFF Constantly
OCI420 Configured. LPB Short Circuit / No Power.
LED ON 93% OFF 7%
OCI420 and LUM64 Not Compatible / LPB Address
inadmissible.
LED ON 5% OFF 95%
Boiler being controlled via LPB and required to be not
operating.
LED ON 5% OFF 20% ON 5% OFF70%
Boiler being controlled via LPB and required to be operating.
