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It was indeed the PIC. I ordered a new one, and flashed the diagnostics firmware to it. When running test #4 I got the following result: Enter test number: 4 OK1A high-to-low: 10us OK1A low-to-high: 19us OK1B high-to-low: 5us OK1B low-to-high: 6us And after installing it between my boiler and thermo...

If I measure the pin 3 and the lead of R9 withthe diode (beeper) test, I get a sound, so I guess the connection is fine when I look at the schematic. I used the following components: Q4: https://www.conrad.nl/nl/transistor-fairchild-semiconductor-bc548bu-soort-behuizing-to-92-3-563804.html Q5: https...

Hi, Thanks for the quick reply. Here are the results of the measurements: Next measure the voltage on X1. This should produce a value somewhere between 18V and 34.5V. Result: 25.5V-26.5V If the voltage is correct you can measure the current between the two terminals of X1. It should be between 5mA a...

Hi, I'm trying to get an DIY of the OTGW working, but I run into some problems. I've connected the thermostat (Remeha iSense v27) and the boiler (Remeha Calenta), but the Thermostat is giving an F207 error (connection error). I see the following messages in otMonitor: 00:52:51.945942 T1002010B Write...