diff --git a/src/feedbacks.js b/src/feedbacks.js
index 5586947..e512e07 100644
--- a/src/feedbacks.js
+++ b/src/feedbacks.js
@@ -95,6 +95,9 @@ module.exports = async function (self) {
 			callback: ({ options }) => {
 				return options.status == self.recorder.playMode
 			},
+			subscribe: () => {
+				self.addCmdtoQueue(SOM + cmd.playModeSense)
+			},
 		},
 		mechaStatus: {
 			name: 'Mecha Status',
diff --git a/src/main.js b/src/main.js
index 3f24589..d9b389c 100644
--- a/src/main.js
+++ b/src/main.js
@@ -13,9 +13,6 @@ class TASCAM_SS_CDR250N extends InstanceBase {
 	constructor(internal) {
 		super(internal)
 		Object.assign(this, { ...config, ...tcp, ...processCmd, ...choices })
-		this.keepAliveTimer = {}
-		this.cmdTimer = {}
-		this.timeOutTimer = {}
 		this.cmdQueue = []
 	}
 	async init(config) {
@@ -32,13 +29,13 @@ class TASCAM_SS_CDR250N extends InstanceBase {
 	// When module gets deleted
 	async destroy() {
 		this.log('debug', `destroy. ID: ${this.id}`)
-		clearTimeout(this.keepAliveTimer)
 		this.stopCmdQueue()
 		this.stopTimeOut()
 		this.stopKeepAlive()
 		if (this.socket) {
 			this.sendCommand(EndSession)
 			this.socket.destroy()
+			delete this.socket
 		}
 		this.updateStatus(InstanceStatus.Disconnected)
 	}
diff --git a/src/tcp.js b/src/tcp.js
index 6b8a471..c076900 100644
--- a/src/tcp.js
+++ b/src/tcp.js
@@ -37,7 +37,10 @@ module.exports = {
 
 	startCmdQueue() {
 		this.log('debug', 'starting cmdTimer')
-		clearTimeout(this.cmdTimer)
+		if (this.cmdTimer) {
+			clearTimeout(this.cmdTimer)
+			delete this.cmdTimer
+		}
 		this.cmdTimer = setTimeout(() => {
 			this.processCmdQueue()
 		}, msgDelay)
@@ -46,7 +49,7 @@ module.exports = {
 	stopCmdQueue() {
 		this.log('debug', 'stopping cmdTimer')
 		clearTimeout(this.cmdTimer)
-		this.cmdTimer = null
+		delete this.cmdTimer
 	},
 
 	sendCommand(msg) {
@@ -92,7 +95,10 @@ module.exports = {
 
 	startKeepAlive() {
 		this.log('debug', 'starting keepAlive')
-		clearTimeout(this.keepAliveTimer)
+		if (this.keepAliveTimer) {
+			clearTimeout(this.keepAliveTimer)
+			delete this.keepAliveTimer
+		}
 		this.keepAliveTimer = setTimeout(() => {
 			this.keepAlive()
 		}, keepAliveInterval)
@@ -101,7 +107,7 @@ module.exports = {
 	stopKeepAlive() {
 		this.log('debug', 'stopping keepAlive')
 		clearTimeout(this.keepAliveTimer)
-		this.keepAliveTimer = null
+		delete this.keepAliveTimer
 	},
 
 	timeOut() {
@@ -115,7 +121,10 @@ module.exports = {
 
 	startTimeOut() {
 		this.log('debug', 'starting timeOutTimer')
-		clearTimeout(this.timeOutTimer)
+		if (this.timeOutTimer) {
+			clearTimeout(this.timeOutTimer)
+			delete this.timeOutTimer
+		}
 		this.timeOutTimer = setTimeout(() => {
 			this.timeOut()
 		}, timeOutInterval)
@@ -124,7 +133,7 @@ module.exports = {
 	stopTimeOut() {
 		this.log('debug', 'stopping timeOutTimer')
 		clearTimeout(this.timeOutTimer)
-		this.timeOutTimer = null
+		delete this.timeOutTimer
 	},
 
 	initTCP() {