OpenQuery in trigger prevents table from working

Trigger Problem

USE [RC2]
GO
/****** Object:  Trigger [dbo].[OpencartProductsUpdate]    Script Date: 2016-11-02 01:43:21 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author:		Linas Jusys
-- Create date: 2016-11-02
-- Description:	Atnaujina prekių duomenis OpenCart duombazėje
-- =============================================
ALTER TRIGGER [dbo].[OpencartProductsUpdate] 
   ON  [RC2].[dbo].[Prekes]
   AFTER UPDATE
AS 
BEGIN
	-- SET NOCOUNT ON added to prevent extra result sets from
	-- interfering with SELECT statements.
	SET NOCOUNT ON;

	    -- Insert statements for trigger here
	DECLARE @ErrorMsg VARCHAR(MAX), @ErrorNumber INT, @ErrorProc sysname, @ErrorLine INT
	BEGIN TRY
		DECLARE	@ID INT
		DECLARE	@model nvarchar(20)
		DECLARE	@model_old nvarchar(20)
		DECLARE	@name nvarchar(150)
		SET @ID = (SELECT PrekeID FROM inserted)
		SET @model = (SELECT NomNr FROM inserted)
		SET @model_old = (SELECT NomNr FROM deleted)
		SET @name = (SELECT Preke FROM inserted)

		INSERT INTO	[Testavimui].[dbo].[DataPreview] (
		[Testavimui].[dbo].[DataPreview].[columnName],
		[Testavimui].[dbo].[DataPreview].[columnValue],
		[Testavimui].[dbo].[DataPreview].[columnValueOld]
		) VALUES (
		'NomNr',
		@model,
		@model_old
		)

		DECLARE @mdxQuery varchar(4000), @sql varchar(4000)
		SET @mdxQuery = 'SELECT model FROM oc_product WHERE model = ' + @model_old
		SET @sql = 'UPDATE OPENQUERY (RCMYSQLOC, ''' + @mdxQuery + ''') SET model = ' + @model

		BEGIN TRY
			Exec(@sql)
		END TRY
		BEGIN CATCH
			SELECT
			@ErrorMsg = ERROR_MESSAGE(),
			@ErrorNumber = ERROR_NUMBER(),
			@ErrorProc = ERROR_PROCEDURE(),
			@ErrorLine = ERROR_LINE();

			/*RollBack Tran;	 */

			INSERT INTO [Testavimui].[dbo].[ErrorLog]
			(
			[Testavimui].[dbo].[ErrorLog].[ErrorMsg],
			[Testavimui].[dbo].[ErrorLog].[ErrorNumber],
			[Testavimui].[dbo].[ErrorLog].[ErrorProc],
			[Testavimui].[dbo].[ErrorLog].[ErrorLine]
			)
			VALUES
			(
			@ErrorMsg,
			@ErrorNumber,
			@ErrorProc,
			@ErrorLine
			)
		END CATCH	 

		/*Execute ('UPDATE oc_product SET model = "'+@model+'" WHERE model = "'+@model_old+'"')at RCMYSQLOC;*/

		/*BEGIN TRAN	
			IF UPDATE(NomNr)	  
				/*Execute ('UPDATE oc_product SET model = "'+@model+'" WHERE model = "'+@model_old+'"')at RCMYSQLOC;
				UPDATE oq SET oq.model = @model
				FROM openquery(RCMYSQLOC, 'SELECT model FROM oc_product') oq
				INNER JOIN [RC2].[dbo].[Prekes] pr ON pr.PrekeID = @ID
				WHERE oq.model = pr.NomNr

				UPDATE oq SET oq.name = @name
				FROM openquery(RCMYSQLOC, 'SELECT name FROM oc_product_description') oq
				INNER JOIN [RC2].[dbo].[Prekes] pr ON pr.PrekeID = @ID
				WHERE oq.model = pr.NomNr

				UPDATE oq SET oq.model = @model
				FROM openquery(RCMYSQLOC, 'SELECT model FROM oc_product') oq
				INNER JOIN [RC2].[dbo].[Prekes] pr ON pr.PrekeID = @ID
				WHERE oq.model = pr.NomNr

				UPDATE oq SET oq.model = @model
				FROM openquery(RCMYSQLOC, 'SELECT model FROM oc_product') oq
				INNER JOIN [RC2].[dbo].[Prekes] pr ON pr.PrekeID = @ID
				WHERE oq.model = pr.NomNr

				UPDATE oq SET oq.model = @model
				FROM openquery(RCMYSQLOC, 'SELECT model FROM oc_product') oq
				INNER JOIN [RC2].[dbo].[Prekes] pr ON pr.PrekeID = @ID
				WHERE oq.model = pr.NomNr  */
		COMMIT TRAN	*/
	END TRY
	BEGIN CATCH

        SELECT
		@ErrorMsg = ERROR_MESSAGE(),
		@ErrorNumber = ERROR_NUMBER(),
		@ErrorProc = ERROR_PROCEDURE(),
		@ErrorLine = ERROR_LINE();

        /*RollBack Tran;	 */

        INSERT INTO [Testavimui].[dbo].[ErrorLog]
		(
		[Testavimui].[dbo].[ErrorLog].[ErrorMsg],
		[Testavimui].[dbo].[ErrorLog].[ErrorNumber],
		[Testavimui].[dbo].[ErrorLog].[ErrorProc],
		[Testavimui].[dbo].[ErrorLog].[ErrorLine]
		)
        VALUES
		(
		@ErrorMsg,
		@ErrorNumber,
		@ErrorProc,
		@ErrorLine
		)
	END CATCH	

END