From 8f973e3b3a3e555da142ba2660e54687528793c3 Mon Sep 17 00:00:00 2001
From: Theo Arends <11044339+arendst@users.noreply.github.com>
Date: Sun, 20 Jul 2025 16:18:26 +0200
Subject: [PATCH] Fix iFan response to command Power0 (#23595)

---
 tasmota/tasmota_support/support_tasmota.ino | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tasmota/tasmota_support/support_tasmota.ino b/tasmota/tasmota_support/support_tasmota.ino
index bf3985329..db2ac55b9 100644
--- a/tasmota/tasmota_support/support_tasmota.ino
+++ b/tasmota/tasmota_support/support_tasmota.ino
@@ -389,6 +389,7 @@ void SetAllPower(uint32_t state, uint32_t source) {
     publish_power = false;
   }
   if (((state >= POWER_OFF) && (state <= POWER_TOGGLE)) || (POWER_OFF_FORCE == state))  {
+    power_t current_power = TasmotaGlobal.power;
     power_t all_on = POWER_MASK >> (POWER_SIZE - TasmotaGlobal.devices_present);
     switch (state) {
     case POWER_OFF:
@@ -408,6 +409,11 @@ void SetAllPower(uint32_t state, uint32_t source) {
       TasmotaGlobal.power = 0; 
       break;
     }
+#ifdef USE_SONOFF_IFAN
+    // Do not touch Fan relays
+    TasmotaGlobal.power &= 0x0001;
+    TasmotaGlobal.power |= (current_power & 0xFFFE);
+#endif  // USE_SONOFF_IFAN
     SetDevicePower(TasmotaGlobal.power, source);
   }
   if (publish_power) {