diff --git a/bundles/org.openhab.binding.vesync/src/main/java/org/openhab/binding/vesync/internal/handlers/VeSyncDeviceAirPurifierHandler.java b/bundles/org.openhab.binding.vesync/src/main/java/org/openhab/binding/vesync/internal/handlers/VeSyncDeviceAirPurifierHandler.java
index 4441d4d18ef..152fc28d44f 100644
--- a/bundles/org.openhab.binding.vesync/src/main/java/org/openhab/binding/vesync/internal/handlers/VeSyncDeviceAirPurifierHandler.java
+++ b/bundles/org.openhab.binding.vesync/src/main/java/org/openhab/binding/vesync/internal/handlers/VeSyncDeviceAirPurifierHandler.java
@@ -15,8 +15,7 @@ package org.openhab.binding.vesync.internal.handlers;
 import static org.openhab.binding.vesync.internal.VeSyncConstants.*;
 import static org.openhab.binding.vesync.internal.dto.requests.VeSyncProtocolConstants.*;
 
-import java.time.LocalDateTime;
-import java.time.temporal.ChronoUnit;
+import java.time.Instant;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.HashMap;
@@ -527,8 +526,8 @@ public class VeSyncDeviceAirPurifierHandler extends VeSyncBaseDeviceHandler {
         // Only 400S appears to have this JSON extension object
         if (purifierStatus.result.result.extension != null) {
             if (purifierStatus.result.result.extension.timerRemain > 0) {
-                updateState(DEVICE_CHANNEL_AF_AUTO_OFF_CALC_TIME, new DateTimeType(LocalDateTime.now()
-                        .plus(purifierStatus.result.result.extension.timerRemain, ChronoUnit.SECONDS).toString()));
+                updateState(DEVICE_CHANNEL_AF_AUTO_OFF_CALC_TIME, new DateTimeType(
+                        Instant.now().plusSeconds(purifierStatus.result.result.extension.timerRemain)));
             } else {
                 updateState(DEVICE_CHANNEL_AF_AUTO_OFF_CALC_TIME, new DateTimeItem("nullEnforcements").getState());
             }