Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Gain access to PCB (use Insulation Mat as required)
Observation:
Which from these 2 types of external controls are fitted ?
OBSERVATION WHAT TYPE OF EXTERNAL CONTROLS ARE FITTED
TA1 - 24 Volt controls
BUS - Remote control
(modulating device)
(modulating device)