IDEAL LOGIC + Combi 24 Installation And Servicing page 58

82 OUTsIDE sENsOR FAULT - CONTACT INsTALLER
Is the wiring securely connected at both the boiler and
Outside Sensor?
Disconnect the wires to the outside sensor.
Check the resistance using a suitable multimeter
connected across the Outside Sensor's terminal pins.
At 0 C expect
o
At 15 C expect
o
At 30 C expect
o
Is the Outside Sensor value correct?
Is the wiring securely connected between the
incoming terminal block boiler connection of the
Outside Sensor and the PCB?
Replace PCB
83 BOILER ChIp CARD FAULT - CONTACT INsTALLER
Is the correct BCC for the boiler securely inserted into the
slot at the front left of the PCB?
(identified by the label on the BCC)
Replace the BCC with a new BCC (that is correct for the
boiler). After switching power on and 'c0' being shown,
reset the boiler. Is 'c2' still shown?
REsET pROCEDURE - To reset boiler, turn mode knob to reset position and immediately turn knob back to required setting.
58
Fault Finding
YES
31,000 - 35,000 Ohms
15,000 - 16,500 Ohms
7,700 - 8,500 Ohms
YES
YES
YES
NO
Securely connect the wiring at both the
boiler and Outside Sensor
NO
Fit a new Outside Sensor
NO Securely connect the wiring at the
Terminal Block and the PCB
NO
Securely attach the correct BCC for the boiler
onto the PCB and after switching power on and
'c0' being shown, reset the boiler.
Note. Ensure the correct orientation of BCC by
placing "TOP" side up.
YES
Replace PCB
+
Ideal Logic Combi -
Installation and Servicing