From 1a0a05c9add15dfeb60555872ce049d51825c905 Mon Sep 17 00:00:00 2001
From: VolkerK62 <99199865+VolkerK62@users.noreply.github.com>
Date: Thu, 20 Aug 2026 16:39:42 +0200
Subject: [PATCH] DaheimLaden: improve error handling (#33010)

---
 charger/daheimladen.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/charger/daheimladen.go b/charger/daheimladen.go
index 9c5cccdb6..c1bc80c93 100644
--- a/charger/daheimladen.go
+++ b/charger/daheimladen.go
@@ -363,6 +363,10 @@ func (wb *DaheimLaden) getPhases() (int, error) {
 }
 
 func (wb *DaheimLaden) checkStation() error {
+	// first call for fw init
+	if _, err := wb.conn.ReadHoldingRegisters(dlRegEvseMaxCurrent, 22); err != nil {
+		return err
+	}
 	b, err := wb.conn.ReadHoldingRegisters(dlRegEvseMaxCurrent, 22)
 	if err != nil {
 		return api.ErrSponsorRequired