From beaf010bc737ee1bf14629950809dd04ed4844ce Mon Sep 17 00:00:00 2001
From: premultiply <4681172+premultiply@users.noreply.github.com>
Date: Sun, 21 Sep 2025 13:03:26 +0200
Subject: [PATCH] Sungrow: disable charger during phase switching (#23716)

---
 charger/sungrow.go | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/charger/sungrow.go b/charger/sungrow.go
index 28b155b38..493caaa6d 100644
--- a/charger/sungrow.go
+++ b/charger/sungrow.go
@@ -246,10 +246,11 @@ func (wb *Sungrow) Phases1p3p(phases int) error {
 		u = 1
 	}
 
-	// Switch phases
-	_, err := wb.conn.WriteSingleRegister(sgRegPhaseSwitch, u)
-
-	return err
+	return whenDisabled(wb, func() error {
+		// Switch phases
+		_, err := wb.conn.WriteSingleRegister(sgRegPhaseSwitch, u)
+		return err
+	})
 }
 
 var _ api.PhaseGetter = (*Sungrow)(nil)