Hi,<br><br>1) After an hour minimum of provable failure of hub to communicate with the valve the valve has suddenly reacted to hub demand. OpenTRV has for some time been demanding 100%, the FHT8V has opened and displays 99 (%) (as expected).<br><br>2) The behaviour on succesful transmission was ... <br><br>
Initial condition:<br> OpenTRV has just (allegedly) transmitted (say) "v|%":100<br> FHT8V displays: NO battery (symbol) (i.e. power ok), YES antenna (symbol), 0 (%)<br> <br> in quick succession ...<br> b) FHT8V displays: NO battery, NO antenna, 0<br> c) OpenTRV outputs: "FHT8V TX" (i.e OpenTRV transmits to valve)<br> d) Shorter delay (< second - difficult to determine - i.e. antenna seems to blink now)<br> e) FHT8V displays: NO battery, YES antenna, 0 (YES valve movement)<br> f) FHT8V opens ...<br> e) FHT8V displays: YES battery, YES antenna, 99 (NO valve movement)<br> <br> Hereafter<br> in quick succession ...<br> b) FHT8V displays: YES battery, NO antenna, 99<br> c) OpenTRV outputs: "FHT8V TX" (i.e OpenTRV transmits to valve)<br> d) Shorter delay (< second - difficult to determine - i.e. antenna seems to blink)<br> e) FHT8V displays: YES battery, YES antenna, 99 (NO valve movement)<br><br> Thus difficult at this time to determine if hub and valve actually in communication.<br><br> Battery sumbol eventually reverts over ~10 minutes to NO battery (symbol) i.e. big power draw whilst valve opens, battery slowly recuperates.<br><br>Regards Gary<br>
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----Original Message----<br>
From: gary.gladman@talktalk.net<br>
Date: 28/03/2015 07:01<br>
To: <opentrv-interest@lists.opentrv.org.uk><br>
Subj: Re: [OpenTRV-interest] Frequent non-communication periods between hub and its valve<br>
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Hi,<br><br>1) Moved hub, now ~3m from FHT8V. After a week I seem to have noticed improved communications.<br><br>2) But, this morning I have noticed hub and valve are not succesfully communicating - i.e. hub is calling for heat but FHT8V is not responding and is showing valve at 0 (%).<br><br>3) However, I have noted the following behaviour which I have not noticed before and may or may not be relevant ...<br><br> Initial condition:<br> OpenTRV has just (allegedly) transmitted (say) "v|%":45<br> FHT8V displays: NO battery (symbol) (i.e. power ok), YES antenna (symbol), 0 (%)<br> <br> a) OpenTRV adjusts valve need (say) "v|%":50<br> ...<br> in quick succession ...<br> b) FHT8V displays: NO battery, NO antenna, 0<br> c) OpenTRV outputs: "FHT8V TX" (i.e OpenTRV transmits to valve)<br> d) Short delay (~second(s) - difficult to determine)<br> e) FHT8V displays: NO battery, YES antenna, 0 (NO valve movement)<br> <br> This behaviour repeats indefinitely from "a) OpenTRV adjusts" ...<br><br>
Any thoughts?<br><br>Regards Gary<br>
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----Original Message----<br>
From: gary.gladman@talktalk.net<br>
Date: 22/03/2015 12:44<br>
To: <opentrv-interest@lists.opentrv.org.uk><br>
Subj: Re: [OpenTRV-interest] Frequent non-communication periods between hub and its valve<br>
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As it happens the FHT8V after a big open or close does indicate batteries but otherwise not. I beleive the problem has existed for a long while so not necessarily recent i.e. related to power, plus I would have thought OpenTRV reset would be more tiring for the FHT8V, as I am assuming it would have to listen more and lock on. Nonetheless I will experiment.<br><br>Range: I am fairly certain I have tried greater ranges but saw no improvement. Nonetheless I will experiment.<br><br>No need to apologise - not a complaint just a report.<br><br>I have another RF problem - I will report that seperately and before I start moving things around.<br><br>Regards Gary<br>
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----Original Message----<br>From: dhd@exnet.com<br>Date: 22/03/2015 11:04<br>To: "Open, non-developer list for interested parties"<opentrv-interest@lists.opentrv.org.uk><br>Subj: Re: [OpenTRV-interest] Frequent non-communication periods between hub and its valve<br><br>Hi,<br><br>Two things commonly cause problems:<br><br>1) Transmitter too close to receiver seems to deafen it (FHT8V or OpenTRV in listen mode). Minimum distance of ~2m seems to be safe.<br><br>2) Batteries getting low on FHT8V.<br><br>Sorry that you’re having this trouble!<br><br>Rgds<br><br>Damon<br><br>> On 22 Mar 2015, at 09:32, gary.gladman@talktalk.net wrote:<br>> <br>> My OpenTRV system is suffering frequent and significant periods (hours) of unsuccesful communication between OpenTRV (hub) and its valve though only ~1m apart.<br>> <br>> Resettimg OpenTRV resolves the issue thus not a basic RF problem but some kind of behaviour problem. After working for some considerable time (hours) problem seems to resurface. Otherwise no discernible pattern.<br>> <br>> I have tried other positions radially and range (further away) for hub with no significant change in this behaviour.<br>> <br>> RF goes through combinations of air, armchair, person, possibly corner of radiator but succeeds/fa</blockquote></blockquote></blockquote>