Relay control: heishamon large with SW 3.8

[WP-Rue]

Maybe somebody can help: I try to activate one of the two relais on the large pcb with a mqqt-Message for circulation pump:

panasonic_heat_pump/gpio/relay/one

Value "1" ( tried as number or string)
no reaction on relais: no sound, no Ohmmeter reaction measured🤔
But blue LED on pcb shows communication, and with an mqqt analyser I saw a message income at

panasonic_heat_pump/log.

Any ideas?

[geduxas]

I just set "panasonic_heat_pump/gpio/relay/one" to 1 and it turns on, also blue led is lit..

[geduxas]

Yes from heatpump, also in rellay i drive high voltage, i use it as zone1/2 thermostat for heatpump

[geduxas]

maybe this somehow help you? it's from mqtt explorer and rellay is working

[WP-Rue]

Thank you- I will check tomorrow!
At the moment I see no difference- I use the Nodered implementation from Ed - and I try to switch relay on with the same topic like you- but nothing happens to the relay...
I will check Relay 2 .. maybe more luck?

[WP-Rue]

Sorry for late answer: relay two seems not to work, too🤔
But the blue led lid with every mqqt command
Was there an issue with changing resistors on the first released pcb for.. something (maybe relay???)

Probably I will use a shelly for the circulation pump.

[geduxas]

Sorry for late answer: relay two seems not to work, too🤔 But the blue led lid with every mqqt command Was there an issue with changing resistors on the first released pcb for.. something (maybe relay???)

Probably I will use a shelly for the circulation pump.

Do you hear relay click while led is switching? Maybe you treat relay contacts wrong? It's dry contact relay. Where you have common (C) for source, and NormalOpen (NO) and NormalClosed (NC) cintacts, so while led is of, NO and C contacts should be in short, while led is light should be short between NC and C