diff --git a/include/charger.h b/include/charger.h
index 872dc06..14e3c24 100644
--- a/include/charger.h
+++ b/include/charger.h
@@ -5,6 +5,7 @@ extern uint32_t startTime;
 bool IsEvseInput();
 bool CheckUnplugged();
 bool CheckTimeout();
+bool CheckDelay();
 void CalcTotals();
 void DisableAll();
 void EvseRead();
diff --git a/libopeninv/libopeninv.a b/libopeninv/libopeninv.a
index ba7384a..62596d2 100644
Binary files a/libopeninv/libopeninv.a and b/libopeninv/libopeninv.a differ
diff --git a/src/charger.cpp b/src/charger.cpp
index 4cf9359..e4cba2c 100644
--- a/src/charger.cpp
+++ b/src/charger.cpp
@@ -81,6 +81,15 @@ bool CheckTimeout()
    return timeout > 0 && (now - startTime) > timeout;
 }
 
+bool CheckDelay()
+{
+   uint32_t now = rtc_get_counter_val();
+   uint32_t start = Param::GetInt(Param::timedly) * 60;
+
+   return start <= 0 || (now - startTime) > start;
+}
+
+
 void EvseRead()
 {
    const int threshProxType1 = 2200;
diff --git a/src/main.cpp b/src/main.cpp
index 755c775..57ede44 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -93,14 +93,6 @@ static bool CheckChargerFaults()
           (active3 && ((Param::GetInt(Param::c3flag) & FLAG_FAULT) || timeouts[2]));
 }
 
-static bool CheckDelay()
-{
-   uint32_t now = rtc_get_counter_val();
-   uint32_t start = Param::GetInt(Param::timedly) * 60;
-
-   return start <= 0 || (now - startTime) > start;
-}
-
 static void CalcAcCurrentLimit()
 {
    int configuredChargers = Param::GetInt(Param::chargerena);
diff --git a/test/test.c b/test/test.c
index 5bdf44c..7b98ac0 100644
--- a/test/test.c
+++ b/test/test.c
@@ -21,6 +21,7 @@ int main() {
       (TestCase){"test_disable_all", test_disable_all},
       (TestCase){"test_calc_totals", test_calc_totals},
       (TestCase){"test_check_timeout", test_check_timeout},
+      (TestCase){"test_check_delay", test_check_delay},
       (TestCase){"test_evse_read", test_evse_read},
       (TestCase){"test_check_start_condition", test_check_start_condition},
       (TestCase){"test_check_voltage", test_check_voltage},
diff --git a/test/test.out b/test/test.out
index ff6cca7..4c71687 100755
Binary files a/test/test.out and b/test/test.out differ
diff --git a/test/test_logic.h b/test/test_logic.h
index 9a9f28b..749b852 100644
--- a/test/test_logic.h
+++ b/test/test_logic.h
@@ -52,6 +52,29 @@ void test_check_timeout()
   assert(res);
 }
 
+void test_check_delay()
+{
+  bool res;
+  startTime = 11;
+  
+  //after delay
+  Param::SetInt(Param::test_time, 14 * 60);
+  Param::SetInt(Param::timedly, 13);
+  res = CheckDelay();
+  assert(res);
+
+  //before delay 
+  Param::SetInt(Param::test_time, 12 * 60);
+  res = CheckDelay();
+  assert(!res);
+
+  //start time changes result
+  startTime = 1100;
+  res = CheckDelay();
+  assert(res);
+}
+
+
 void test_evse_read()
 {
   // INP_MANUAL