Hi
I need to check if I have power on a PCB (Alpha CB28).
I have replaced the Air Pressure Switch - the problem remains.
My final check before forking out £150 for a new PCB is to determine if the PCB is dead (dead feed to APS).
The manual says I should also check M5 and M6.
I have got hold of a Rapitest DM25 - but no instructions.
MY QUESTION
I need to check for 24 V DC
What settings should I set the tester at;
1) V _
...
2) V ~
number 1 OR number 2
3) Presumably I would select 200 (not 20) is this right?
4) I have got the RED PROBE in V (ohms sign)
5) The BLACK PROBE is in COM
I have got to test connector number 15 (within M5)
and number 20 (within M6).
My last question - do I hold the probes ON BOTH
connectors at the same time while testing?
On the circuit diagram the APS switch (number 14 0\ 0 number 15)
i.e. the switch is not connected at number 15.
Number 20 in M6 is one of two connectors into
Gas Valve Modulating Coil.
Any help would be really apprciated.
Thanks, Stephen
I need to check if I have power on a PCB (Alpha CB28).
I have replaced the Air Pressure Switch - the problem remains.
My final check before forking out £150 for a new PCB is to determine if the PCB is dead (dead feed to APS).
The manual says I should also check M5 and M6.
I have got hold of a Rapitest DM25 - but no instructions.
MY QUESTION
I need to check for 24 V DC
What settings should I set the tester at;
1) V _
...
2) V ~
number 1 OR number 2
3) Presumably I would select 200 (not 20) is this right?
4) I have got the RED PROBE in V (ohms sign)
5) The BLACK PROBE is in COM
I have got to test connector number 15 (within M5)
and number 20 (within M6).
My last question - do I hold the probes ON BOTH
connectors at the same time while testing?
On the circuit diagram the APS switch (number 14 0\ 0 number 15)
i.e. the switch is not connected at number 15.
Number 20 in M6 is one of two connectors into
Gas Valve Modulating Coil.
Any help would be really apprciated.
Thanks, Stephen