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3980
From: Listen'n2, [DNS_Address]
Subject: need help wiring HRV electronic controls
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Any electricians/electronic techs out there that care to reply with suggestions? I had to replace the old HRV "Constructo 1.5" with this new generation "Constructo 1.5" HRV, thinking that would make it simple. However this same model has changed over the past 15 years, not only had the duct work been reconfigured but the wiring of the control system on the mother board changed as well. The original wiring on the Humidistat was as follows: Yellow to J1-1 Red to J1-2 Green (maybe grey, I'm colour blind) wired to J1-3 Black to J1-4 The original wiring of the original 20 minute timer was as follows: Red to OL Black to OC Yellow to I Green (grey?) was not used. The problem is none of the controls illustrated show which contact points to use (humidistat) J1-1, J1-2, J1-3 J1-4 and (20 minute timer) OL, OC & I Installation_Manual.pdf See page 15 & 16. I tried wiring the controls as seen in the lower diagram on page 16 with no luck. The system runs continually and the 20 minute override timer does not work. I then tried wiring the controls as seen on page 15 section 4.2.5, this time the HRV runs continually and the 20 minute time stays lit as if running. the humidistat the 20 minute timer (bathroom) If possible I'd rather not have to call Venmar for help as they are located in Quebec I don't speak French my past experiences with Quebecers never went well. |
Responses:
[4003] [4006] [4000] [3983] [3984] [3985] [3986] [3987] [3990] [3981] [3982]
4003
From: Listen'n2, [DNS_Address]
Subject: Brian Jeff - Re: need help wiring HRV electronic controls
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thank you for your help. I received a call back (from my online request for help) this morning after I left for work. They left a phone number for me to call back to; I'll do that tomorrow. Hopefully they will be able to advise on which connections to make. I'll let you know if the wiring directions that they provide, work or not |
Responses:
[4006]
4006
From: Listen'n2, [DNS_Address]
Subject: solved - Re: need help wiring HRV electronic controls
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How to wire it (lol) I had this wiring combo at one time but it didn't function properly, because "The integrated control must be turned OFF to use an optional main control." I had the switch at low (amber). That's it! So if interested in the answer to this puzzlement, the 20 minute timer was OL OC I to the corresponding connects on the HRV (OL OC I) and the main dehumidistat was wired J1-3 to "G" and J1-4 to "B". J1-1 & J1-2 were not used. On the original HRV all four connects were used, which only served to confuse matters. Thanks for your input Brian |
Responses:
None
4000
From: Jeff/Lake Almanor,CA, [DNS_Address]
Subject: Re: need help wiring HRV electronic controls
URL: http://dms.hvacpartners.com/docs/1009/public/0d/ervhrv-3si.pdf
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Hi Lars, See page six under accessories of link above. Then compare to link below, your timer. Your Humidistat will also connect to "OL" and "OC" at control board or the closest timer. Wire color is not that important, but must be the same on both ends OC to OC, OL to OL. Yet the link above will show the proper colors. Also see the troubleshooting at the bottom. You can jump OC and OL and it should turn the fan to Hi. The timer will override the humidistat, and either of these will override a main controller. Also sounds like your unit needs some time to boot up, like a computer. http://www.venmar- usa.com/DATA/DOCUMENT/243_5_us~v~Installation_Manual.pdf |
Responses:
None
3983
From: Skywise, [DNS_Address]
Subject: Re: need help wiring HRV electronic controls
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If I am reading things correctly, the correct diagram is 4.2.5 on page 15. All the items hook up in parallel. Basically, all the OL's are tied together, all the OC's, and all the I's. BUT the wall control only has two connections (no 'I') I made a new diagram based on what's in the manuals but specific to your devices and using the colors you defined. I did not label the Wall Control connections as none of the documentation I could find gave that information. Is this anything like what you tried? Brian  |
3984
From: Listen'n2, [DNS_Address]
Subject: Re: need help wiring HRV electronic controls
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That’s exactly how I wired it the 2nd time. The HRV runs continually (it’s not too dry inside) and the timer does not function but the run light stays lit. My first attempt had R, B Y from the humidistat going to blocks B G R Y (7-10) on the unit and the timer R B Y going to OL OC I (4-6) The controls I’m using are the original ones (which worked just fine up until the unit got noisy and died). They look exactly like the linked images. Problem is I don’t know the recommended connections, I’m assuming they’d be no different. Another problem is with the original HRV the wires were screwed right to the motherboard, the markings on the board meant nothing to me as they were not marked like the new unit. With the new unit it's just push bare end into a block which then clips onto the board. There's a release to un-plug the control wires, so can keep trying different combos |
3985
From: Skywise, [DNS_Address]
Subject: Re: need help wiring HRV electronic controls
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In troubleshooting electronics (or software) one learns very quickly to simplify things so that multiple possible sources of error don't cause multiple problems. Try hooking up only the humidistat. In this case it looks like there are only two wires coming from that per page 15 (diagram 4.2.4), and they hook to the G & B terminals (9 & 10). Not sure which way around but there's only two possible combinations to try. See if that works by itself. Similarly, you could also try hooking up only the 20 minute timer. That's three wires, and per page 15 (diagram 4.2.3), 'OC' on the time goes to 'Y', and then 'G' to 'G' and 'B' to 'B'. See if that works by itself as well. The idea is, there's always a chance that not only did the HRV go bad, but also one of the other devices as well. This helps test that idea. Brian |
3986
From: Listen'n2, [DNS_Address]
Subject: Re: need help wiring HRV electronic controls
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"The idea is, there's always a chance that not only did the HRV go bad, but also one of the other devices as well. This helps test that idea." yeah it's possible I did see that part about using jumpers to test the control and or for an open wire (break) Thanks Brian for your input. I'm heading to bed will let you know Monday how it turns out |
3987
From: Listen'n2, [DNS_Address]
Subject: ok latest configuration - need help wiring HRV electronic controls
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Connected wires to the terminals on the HRV, and controls as follows. I used the same coloured wires on the humidistat and 20 minute push button timer (I sure hope so between being colourblind and the wire colouring being of different shades - fuck! the sheathing colour on each cable is different - probably to differentiate). Yellow I/J1-1, Red OL/J1-2, Black OC/J1-4. The main humidistat control no longer operates on high, however the 20 minute timer, is now working as it should. Almost there :) I disconnected the Green(or grey <- again colourblind) wire from J1-3 on the humidistat; maybe that's why the high operation function on the humidistat no longer works. On the original humidistat the J1-3 terminal was connected, but to what on the original HRV I don't know as the wires were just screwed to the motherboard, there was no identifying markers (ie: OL OC I or J1- series). Any suggestions for the J1-3 terminal on the humidistat, (which the green/grey wire was connected to on the original installation).... block 9=G??? only asking because of the colour and marker being "G" I'm wondering if it is the terminal for high air flow operation and if so to which terminal block would I connect it. However the installation manual page 15 section 4.2.5 the "I" terminal (yellow) is not used. The terminal blocks are marked as follows 1=NO, 2=C, 3=NC, 4=I, 5=OC, 6=OL, 7=Y, 8=R, 9=G, 10-B |
Responses:
[3990]
3990
From: Skywise, [DNS_Address]
Subject: Re: ok latest configuration - need help wiring HRV electronic controls
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Is it be possible for you to take pictures and email them to me? It would make it easier for me to see what you have. Brian |
Responses:
None
3981
From: Skywise, [DNS_Address]
Subject: Re: need help wiring HRV electronic controls
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I'm looking the manuals over. I used to be an electronics tech. I'll get back to once I figure it out, if I can. Brian |
Responses:
[3982]
3982
From: Listen'n2, [DNS_Address]
Subject: Re: need help wiring HRV electronic controls
| that'd be great thanks Brian |
Responses:
None
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