Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Set Multimeter to DC Volts 
On/Off Switch ON
NO demand
ECO mode ON (illuminated)
Gain access to PCB (use insulation mat as necessary)
NO demand
ECO mode ON (illuminated)
Gain access to PCB (use insulation mat as necessary)
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Measurement:
Step 1:
Measure the voltage across pin 1 of ST17 and mains neutral. Expected voltage 13V DC. (A voltage of up to 30V DC may be measured initially but this should decrease and settle at approximately 13V DC)
Step 2:
Press and hold the reset button on the control panel for 2 seconds and then release, the voltage should then drop away and return to 13V DC.
Step 3:
Repeat Steps 1 and 2 at the following locations
Measure the voltage across pin 1 of ST17 and mains neutral. Expected voltage 13V DC. (A voltage of up to 30V DC may be measured initially but this should decrease and settle at approximately 13V DC)
Step 2:
Press and hold the reset button on the control panel for 2 seconds and then release, the voltage should then drop away and return to 13V DC.
Step 3:
Repeat Steps 1 and 2 at the following locations
