From a452d6131bc6d5806daea4b5d1ed75491bc0493c Mon Sep 17 00:00:00 2001
From: proddy <paul@derbyshire.nl>
Date: Wed, 3 Dec 2025 21:53:16 +0100
Subject: [PATCH] DiffTemp ranged to 4-15 K - fix #2783

---
 src/devices/boiler.cpp | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/devices/boiler.cpp b/src/devices/boiler.cpp
index 83de008a5..7d6d16fea 100644
--- a/src/devices/boiler.cpp
+++ b/src/devices/boiler.cpp
@@ -964,17 +964,17 @@ Boiler::Boiler(uint8_t device_type, int8_t device_id, uint8_t product_id, const
                               48,
                               63);
         register_device_value(
-            DeviceValueTAG::TAG_DHW1, &wwComfDiffTemp_, DeviceValueType::UINT8, FL_(wwComfDiffTemp), DeviceValueUOM::K, MAKE_CF_CB(set_wwComfDiffTemp), 4, 12);
+            DeviceValueTAG::TAG_DHW1, &wwComfDiffTemp_, DeviceValueType::UINT8, FL_(wwComfDiffTemp), DeviceValueUOM::K, MAKE_CF_CB(set_wwComfDiffTemp), 4, 15);
         register_device_value(
-            DeviceValueTAG::TAG_DHW1, &wwEcoDiffTemp_, DeviceValueType::UINT8, FL_(wwEcoDiffTemp), DeviceValueUOM::K, MAKE_CF_CB(set_wwEcoDiffTemp), 4, 12);
+            DeviceValueTAG::TAG_DHW1, &wwEcoDiffTemp_, DeviceValueType::UINT8, FL_(wwEcoDiffTemp), DeviceValueUOM::K, MAKE_CF_CB(set_wwEcoDiffTemp), 4, 15);
         register_device_value(DeviceValueTAG::TAG_DHW1,
                               &wwEcoPlusDiffTemp_,
                               DeviceValueType::UINT8,
                               FL_(wwEcoPlusDiffTemp),
                               DeviceValueUOM::K,
                               MAKE_CF_CB(set_wwEcoPlusDiffTemp),
-                              6,
-                              12);
+                              4,
+                              15);
         register_device_value(DeviceValueTAG::TAG_DHW1,
                               &wwComfStopTemp_,
                               DeviceValueType::UINT8,