Taco Posted January 13, 2017 Share Posted January 13, 2017 Theres also every chance it could be a faulty base or bad connetion drawing too much current. I would also do a reset point threshold comp. any time you change a device Quote Every day is a school day Link to comment Share on other sites More sharing options...
goncall Posted January 13, 2017 Share Posted January 13, 2017 Depends on the device are they mr501 or mr901 501 bases can cause problems a 901 base won't Quote Link to comment Share on other sites More sharing options...
ImCed Posted January 14, 2017 Author Share Posted January 14, 2017 15 hours ago, Taco said: You wont get high ident faults on mcp's mate, i wouldnt even bother looking there. It certainly looks like the air quality is being affected and this is whats triggering the faults. Could you change the type of detectors to co or heats? That would resolve the issue, other than that, some sort of barrier at the door or extractor fan seems like the air quality. Anyway, seems like its impossible to change the type of head from smoke to any other type unless I reprogrammed the eprom inside as per maker's advice. And, as a crew here, we are not allowed to do changes on it. 11 hours ago, goncall said: if you've changed ion to hpo you will have to change programming in consys or you will get id faults, also any faulty device on the loop can cause low and high id faults on other devices, a faulty mcp causing id faults is common only way to prove is to discon one device at a time and link the loop thru and check the levels unless you have a shorting device which speeds up the process its a pain of a fault to trace Thanks mate,I got your point, but, when the technician came here 6mos ago (this problem not yet exist), he adviced us that HPO (MR901T) is ok to replace ion (mF901)without problem, because ion is not available in the market. Only optical (MR901) needs reprogramming. With regards to mcp, can you please elaborate more how to prove it? 10 hours ago, Taco said: Theres also every chance it could be a faulty base or bad connetion drawing too much current. I would also do a reset point threshold comp. any time you change a device Mate, what do you mean by a reset threshold comp? Quote Link to comment Share on other sites More sharing options...
Taco Posted January 14, 2017 Share Posted January 14, 2017 The system basically adjusts the range in sensitivity of a detector due to dirt/age to reduce false alarms, so after a period of time that threshold will rise to compensate for a 'dirty' chamber. When you replace a head that value is obviously way higher as the new detector is cleaner. Defaulting the threshold is telling the panel your detector is clean I think its under 3.9 something in the menu. Best bet is to download a manual for it if you dont have one Quote Every day is a school day Link to comment Share on other sites More sharing options...
ImCed Posted January 17, 2017 Author Share Posted January 17, 2017 On 1/14/2017 at 7:11 PM, Taco said: The system basically adjusts the range in sensitivity of a detector due to dirt/age to reduce false alarms, so after a period of time that threshold will rise to compensate for a 'dirty' chamber. When you replace a head that value is obviously way higher as the new detector is cleaner. Defaulting the threshold is telling the panel your detector is clean I think its under 3.9 something in the menu. Best bet is to download a manual for it if you dont have one Yep, seems like that's the best option. Is there any link you can provide? Because I'm still struggling at our internet connection here. Anyway, I was wondering what is the proper voltage for each loop? As I check, it has 16volts max in each loop (A,B,C,D loops), but what I know in each head, min voltage should be 18volts and 32volts at max... Any comment for this? Quote Link to comment Share on other sites More sharing options...
Taco Posted January 17, 2017 Share Posted January 17, 2017 Are you checking the voltage across the terminals with the loop connected? You should be getting 24v output across all 4 loops with nothing connected. If you are getting 16v with nothing connected then this is way too low and you're looking at a faulty main board. The detectors will work within certain ranges, but your panel will start registering all sorts of weird and wonderful issues if its only outputting 16v. If you're getting 24v with nothing connected you're going to have to start splitting the loop and measuring the voltage at the detectors until you find where the drop is, and that will be your fault. Ive attached a pdf that should explain quite a few things for you too Minerva Addressable Service Instructions.pdf Quote Every day is a school day Link to comment Share on other sites More sharing options...
firemonkey Posted March 3, 2017 Share Posted March 3, 2017 All instances of this I've come across are contaminated heads, sometimes they clean up and clear but quite often come back into fault and need replacement Quote Link to comment Share on other sites More sharing options...
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