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Ah, check. Did not realize that PS=1 (needed that for domoticz) disables all logging. I'll spent some more time reading the documentation and give it a retry.

Found out how the gateway starts running again. It has something to do with the boiler (can it be power management or something? That the gateway expects a message and the boiler does not send anything and thus reports error 03?) and the way to get it running again is to just activate the DHW functi...

I've tested some more after the error 03 appeared and I'm not really sure how to get it working again. First I restarted the boiler and after that the otgw starts reporting all zero's. After that I restarted the otgw a few times and then after sometime it starts working again but not immediately aft...

Ok, I managed to get a log now. It always happens on the end of the afternoon it seems. It logs error 03.

Please find the log attached.

You are totally right.

The gateway is running in monitor mode now without any issues, attached a log from a few minutes operation.

I've set it back in GW mode and keep logging with otmonitor meanwhile until it happens again.

Hi there, I've just started using the OTGW and everything works as it should be but after working for about a day the OTGW starts reporting all zero values (no errors). The PS=1 command reports all values 0. This does not solve with a GW=R command, I have to disconnect and reconnect the power to sol...

Found it finally! Replaced the two other zeners first. The last issue was caused by the optocoupler. The voltage of the test in the previous post never got above 0,91V. With the other opto (A827) it's now 1,27V (with IC1 Pin3 connected to ground). Now test 4 of the diagnostics firmware succeeds and ...

Hi,

Thanks for your reply. I've triple checked my resistors and they are all in the right place and the right value. Hoped that I had also mixed up one... I'll continue troubleshooting. Thanks again for your response.

After almost throwing the otgw out of the window I now resumed working on it again. Replaced D11 and now I have much better values. OK1 pin 8 => 4.17V Cathode of D10 => 4.17V Cathode of D9 => 1.98V Both sides of R1 => 4.18V | 4.84V OK1 pin 1 => 1.2V OK1 pin 2 => 0V IC1 pin 2 => 4.94V If you connect ...

Hi, well I'm happy there's some improvement :-) I've bought myself a brand new optocoupler today, the best I could get is an ltv-827 (like this one https://www.conrad.nl/nl/fototransistor-lite-on-ltv827-dip-8-transistor-dc-187003.html). You know if that one should be ok? The values (with IC1 pin two...

Hi, thanks again for your answer. Meanwhile I replaced the optocoupler with one I "borrowed" from another device. Now values are totally different: OK1 pin 8 => 5,98V (should be 4,5V) Cathode of D10 (side with the ring) => 5,98V (should be 15V) Cathode of D9 => 1,74V Both sides of R1 => 5,...

Ah, should have checked the schematic before asking

D10 -> OK1 pin 8
is connected

GND1
all are connected

I'll try to check all connections I can see on the pcb.

Ah, ok, thanks. What value should it be normally? Please find the measured values below: Please measure the following voltages relative to OK1 pin 4 (X1 and X2 still looped and IC1 socket pin 2 connected to pin 14): OK1 pin 8 => 0.92V Cathode of D10 (side with the ring) => 19,78V Cathode of D9 => 1,...

Ok, I checked the values: Check the resistance between OK1 pin 1 and pin 2 of the IC1 socket. If that is not around 1500 Ohm, then R8 is the culprit. => 1103 Ohm. With X1 looped to X2, OK1 in place and IC1 removed, connect pin 2 of the IC1 socket to pin 14 and measure the voltage across D11 and the ...

Hi, First of all, many thanks for responding. I'm aware that the measurements should be done without IC1 in it's socket (read the previous posts about it also :-)). Meanwhile I detected a broken connection between d11 and OK1, fixed this now but this does not solve the issue. I'll continue checking ...