diff --git a/pyasic/config/fans.py b/pyasic/config/fans.py
index 520f9da9..b9970b11 100644
--- a/pyasic/config/fans.py
+++ b/pyasic/config/fans.py
@@ -96,7 +96,7 @@ class FanModeManual(MinerConfigValue):
         return cls(**cls_conf)
 
     def as_am_modern(self) -> dict:
-        return {"bitmain-fan-ctrl": True, "bitmain-fan-pwn": str(self.speed)}
+        return {"bitmain-fan-ctrl": True, "bitmain-fan-pwm": str(self.speed)}
 
     def as_bosminer(self) -> dict:
         return {
@@ -120,7 +120,7 @@ class FanModeImmersion(MinerConfigValue):
         return cls()
 
     def as_am_modern(self) -> dict:
-        return {"bitmain-fan-ctrl": True, "bitmain-fan-pwn": "0"}
+        return {"bitmain-fan-ctrl": True, "bitmain-fan-pwm": "0"}
 
     def as_bosminer(self) -> dict:
         return {"temp_control": {"mode": "disabled"}}
@@ -156,7 +156,10 @@ class FanModeConfig(MinerConfigOption):
         if web_conf.get("bitmain-fan-ctrl") is not None:
             fan_manual = web_conf["bitmain-fan-ctrl"]
             if fan_manual:
-                return cls.manual(speed=web_conf["bitmain-fan-pwm"])
+                speed = int(web_conf["bitmain-fan-pwm"])
+                if speed == 0:
+                    return cls.immersion()
+                return cls.manual(speed=speed)
             else:
                 return cls.normal()
         else:
diff --git a/tests/__init__.py b/tests/__init__.py
index 17b6c644..cdbcd3d3 100644
--- a/tests/__init__.py
+++ b/tests/__init__.py
@@ -14,7 +14,7 @@
 #  limitations under the License.                                              -
 # ------------------------------------------------------------------------------
 
-from tests.api_tests import *
+from tests.rpc_tests import *
 from tests.config_tests import TestConfig
 from tests.miners_tests import MinersTest
 from tests.network_tests import NetworkTest
diff --git a/tests/config_tests/__init__.py b/tests/config_tests/__init__.py
index 8abf597e..e143a154 100644
--- a/tests/config_tests/__init__.py
+++ b/tests/config_tests/__init__.py
@@ -128,9 +128,9 @@ class TestConfig(unittest.TestCase):
     def test_am_modern_serialize(self):
         correct_config = {
             "bitmain-fan-ctrl": True,
-            "bitmain-fan-pwn": "90",
+            "bitmain-fan-pwm": "90",
             "freq-level": "100",
-            "miner-mode": "0",
+            "miner-mode": 0,
             "pools": [
                 {
                     "url": "stratum+tcp://stratum.test.io:3333",
diff --git a/tests/config_tests/fans.py b/tests/config_tests/fans.py
new file mode 100644
index 00000000..6830f122
--- /dev/null
+++ b/tests/config_tests/fans.py
@@ -0,0 +1,35 @@
+import unittest
+
+from pyasic.config import FanModeConfig
+
+
+class TestFanConfig(unittest.TestCase):
+    def test_serialize_and_deserialize(self):
+        for fan_mode in FanModeConfig:
+            with self.subTest(
+                msg=f"Test serialization and deserialization of fan config",
+                fan_mode=fan_mode,
+            ):
+                conf = fan_mode()
+                dict_conf = conf.as_dict()
+                self.assertEqual(conf, FanModeConfig.from_dict(dict_conf))
+
+    def test_bosminer_deserialize_and_serialize(self):
+        for fan_mode in FanModeConfig:
+            with self.subTest(
+                msg=f"Test serialization and deserialization of bosminer fan config",
+                fan_mode=fan_mode,
+            ):
+                conf = fan_mode()
+                bos_conf = conf.as_bosminer()
+                self.assertEqual(conf, FanModeConfig.from_bosminer(bos_conf))
+
+    def test_am_modern_deserialize_and_serialize(self):
+        for fan_mode in FanModeConfig:
+            with self.subTest(
+                msg=f"Test serialization and deserialization of antminer modern fan config",
+                fan_mode=fan_mode,
+            ):
+                conf = fan_mode()
+                am_conf = conf.as_am_modern()
+                self.assertEqual(conf, FanModeConfig.from_am_modern(am_conf))
diff --git a/tests/api_tests/__init__.py b/tests/rpc_tests/__init__.py
similarity index 100%
rename from tests/api_tests/__init__.py
rename to tests/rpc_tests/__init__.py