IDEAL EVOMAX 2 30 Installation And Servicing

Fit a new outside sensor
no
Disconnect the wires to the Outside Sensor. Check the
resistance using a suitable multimeter connected across
the thermistor’s terminal pins.
At 0°C expect 32,000 - 33,000 Ω
At 10°C expect 19,000 - 21,000 Ω
At 20°C expect 12,000 - 13,000 Ω
Is the thermistor value correct?
yes
Ensure the wiring has continuity and is
securely connected
no
yes
Does the Outside Sensor wiring between the boiler
terminal strip and the PCB have continuity and is
securely connected?
Replace main PCB
Securely connect the wiring at both
the boiler and Outside sensor
no
Is the wiring securely connected at both the boiler and
Outside Sensor?
yes
5.10 OUTSIDE SENSOR FAULT (IF FITTED)
5.8 FAN FAULT
Rectify wiring & connections
no
Does the wiring from the Fan to the PCB have secure
connections at both ends and has not deteriorated?
Does the wiring have continuity?
yes
Replace main PCB
Replace Fan
no
yes
Is there 230Vac at the blue and brown
connections to the 3 way connection on the Fan?
5.9 FLOW / RETURN THERMISTOR OR HEAT EXCHANGER THERMISTOR FAULT
Fit a new thermistor
no
Disconnect the electrical connection to the Flow
Thermistor and check the resistance using a suitable
multimeter connected across the thermistor’s terminal
pins.
At 25°C expect 9,700 - 10,300 Ω
At 60°C expect 2,400 - 2,600 Ω
At 85°C expect 1,000 - 1,100 Ω
Is the thermistor value correct?
yes
Check and replace wiring as necessary
Replace main PCB
no
yes
Is there continuity between the PCB and the Thermistor?
67
Installation & Servicing
SECTION 5 - FAULT FINDING
FAULT FINDING FAULT FINDING FAULT FINDING FAULT FINDING FAULT FINDING FAULT FINDING

IDEAL EVOMAX 2 30 Specifications

General

Brand	IDEAL
Model	EVOMAX 2 30
Category	Boiler
Language	English