Potterton 7668920, Engineer'S Service Manual

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5.0 HMI
5.1 LED sequences
Boiler in operation
Demand
Blocking
Temperature protection
Blocking input
Flame loss
Communication error
Parameter or id fault
Miscellaneous
Lockout
Sensor error
Max temp protection
Ignition fault
Fan fault
Parameter error
Miscellaneous
Reset
Working with reset
The HMI has 2 illuminating push buttons which provide information about the operating condition of the boiler.
The ‘RESET’ button lights up green when the boiler has a demand.
The ‘Chimney Sweep’ button can flash in a range of colours and at different frequencies.
The HMI also has one rotary knob. The rotary knob can be used to set the maximum flow temperature of the
heating water.
The temperature on this rotary knob must be set to a higher temperature than the cylinder thermostat to
achieve the required hot water demand.
Chimney sweep mode
Minimum
Maximum
Maximum
PCB programming
1 Heating water temperature rotary knob
2 Chimney Sweep button and Status signals
3 RESET-button and on/off signal
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1 2 3