A PHP Error was encountered

Severity: 8192

Message: strpos(): Non-string needles will be interpreted as strings in the future. Use an explicit chr() call to preserve the current behavior

Filename: MX/Router.php

Line Number: 239

Backtrace:

File: /home/customer/www/hvactraining.tv/public_html/application/third_party/MX/Router.php
Line: 239
Function: strpos

File: /home/customer/www/hvactraining.tv/public_html/application/third_party/MX/Router.php
Line: 101
Function: _set_default_controller

File: /home/customer/www/hvactraining.tv/public_html/index.php
Line: 318
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Headers already sent. You cannot change the session module's ini settings at this time

Filename: Session/Session.php

Line Number: 281

Backtrace:

File: /home/customer/www/hvactraining.tv/public_html/application/third_party/MX/Loader.php
Line: 173
Function: _ci_load_library

File: /home/customer/www/hvactraining.tv/public_html/application/modules/home/controllers/Home.php
Line: 8
Function: __construct

File: /home/customer/www/hvactraining.tv/public_html/index.php
Line: 318
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: session_set_cookie_params(): Cannot change session cookie parameters when headers already sent

Filename: Session/Session.php

Line Number: 293

Backtrace:

File: /home/customer/www/hvactraining.tv/public_html/application/third_party/MX/Loader.php
Line: 173
Function: _ci_load_library

File: /home/customer/www/hvactraining.tv/public_html/application/modules/home/controllers/Home.php
Line: 8
Function: __construct

File: /home/customer/www/hvactraining.tv/public_html/index.php
Line: 318
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Headers already sent. You cannot change the session module's ini settings at this time

Filename: Session/Session.php

Line Number: 303

Backtrace:

File: /home/customer/www/hvactraining.tv/public_html/application/third_party/MX/Loader.php
Line: 173
Function: _ci_load_library

File: /home/customer/www/hvactraining.tv/public_html/application/modules/home/controllers/Home.php
Line: 8
Function: __construct

File: /home/customer/www/hvactraining.tv/public_html/index.php
Line: 318
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Headers already sent. You cannot change the session module's ini settings at this time

Filename: Session/Session.php

Line Number: 313

Backtrace:

File: /home/customer/www/hvactraining.tv/public_html/application/third_party/MX/Loader.php
Line: 173
Function: _ci_load_library

File: /home/customer/www/hvactraining.tv/public_html/application/modules/home/controllers/Home.php
Line: 8
Function: __construct

File: /home/customer/www/hvactraining.tv/public_html/index.php
Line: 318
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Headers already sent. You cannot change the session module's ini settings at this time

Filename: Session/Session.php

Line Number: 314

Backtrace:

File: /home/customer/www/hvactraining.tv/public_html/application/third_party/MX/Loader.php
Line: 173
Function: _ci_load_library

File: /home/customer/www/hvactraining.tv/public_html/application/modules/home/controllers/Home.php
Line: 8
Function: __construct

File: /home/customer/www/hvactraining.tv/public_html/index.php
Line: 318
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Headers already sent. You cannot change the session module's ini settings at this time

Filename: Session/Session.php

Line Number: 315

Backtrace:

File: /home/customer/www/hvactraining.tv/public_html/application/third_party/MX/Loader.php
Line: 173
Function: _ci_load_library

File: /home/customer/www/hvactraining.tv/public_html/application/modules/home/controllers/Home.php
Line: 8
Function: __construct

File: /home/customer/www/hvactraining.tv/public_html/index.php
Line: 318
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Headers already sent. You cannot change the session module's ini settings at this time

Filename: Session/Session.php

Line Number: 316

Backtrace:

File: /home/customer/www/hvactraining.tv/public_html/application/third_party/MX/Loader.php
Line: 173
Function: _ci_load_library

File: /home/customer/www/hvactraining.tv/public_html/application/modules/home/controllers/Home.php
Line: 8
Function: __construct

File: /home/customer/www/hvactraining.tv/public_html/index.php
Line: 318
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: ini_set(): Headers already sent. You cannot change the session module's ini settings at this time

Filename: drivers/Session_files_driver.php

Line Number: 94

Backtrace:

File: /home/customer/www/hvactraining.tv/public_html/application/third_party/MX/Loader.php
Line: 173
Function: _ci_load_library

File: /home/customer/www/hvactraining.tv/public_html/application/modules/home/controllers/Home.php
Line: 8
Function: __construct

File: /home/customer/www/hvactraining.tv/public_html/index.php
Line: 318
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: session_set_save_handler(): Cannot change save handler when headers already sent

Filename: Session/Session.php

Line Number: 107

Backtrace:

File: /home/customer/www/hvactraining.tv/public_html/application/third_party/MX/Loader.php
Line: 173
Function: _ci_load_library

File: /home/customer/www/hvactraining.tv/public_html/application/modules/home/controllers/Home.php
Line: 8
Function: __construct

File: /home/customer/www/hvactraining.tv/public_html/index.php
Line: 318
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: session_start(): Cannot start session when headers already sent

Filename: Session/Session.php

Line Number: 140

Backtrace:

File: /home/customer/www/hvactraining.tv/public_html/application/third_party/MX/Loader.php
Line: 173
Function: _ci_load_library

File: /home/customer/www/hvactraining.tv/public_html/application/modules/home/controllers/Home.php
Line: 8
Function: __construct

File: /home/customer/www/hvactraining.tv/public_html/index.php
Line: 318
Function: require_once

Home - HVAC Training TV


The Basic Refrigeration Cycle                                                                                                                         
Available - September 26, 2023
Understanding Thermistors                                                                                                                                 
Available - October 26, 2023
Motor Starting Devices                                                                                                                                       
Available - November 25, 2023
Honeywell Ignition Control Modules - Part 1                                                                                             
Available - December 25, 2023
Honeywell Ignition Control Modules - Part 2                                                                                             
Available - January 24, 2024
Reversing Valves - Part 1                                                                                                                                 
Available - February 23, 2024
Reversing Valves - Part 2                                                                                                                                 
Available - March 24, 2024
Using a Troubleshooting Matrix for Refrigeration - Part 1                                                                 
Available - April 23, 2024
Using a Troubleshooting Matrix for Refrigeration - Part 2                                                                 
Available - May 23, 2024
Using a Troubleshooting Matrix for Refrigeration - Part 3                                                                 
Available - June 22, 2024
Commercial Refrigeration Defrost Timers - Part 1                                                                                   
Available - July 22, 2024
Commercial Refrigeration Defrost Timers - Part 2                                                                                   
Available - August 21, 2024
Intro to TXVs - Part 1                                                                                                                                       
Available - September 20, 2024
Intro to TXVs - Part 2                                                                                                                                       
Available - October 20, 2024
Breaking the Code on Contactors in a Schematic Diagram                                                                       
Available - November 19, 2024
R-22 Refrigeration Cycle - Part 1                                                                                                                 
Available - December 19, 2024
R-22 Refrigeration Cycle - Part 2                                                                                                                 
Available - January 18, 2025
R-22 Refrigeration Cycle - Part 3                                                                                                                 
Available - February 17, 2025
R22 System Refrigeration Cycle Over and Under Charged                                                                         
Available - March 19, 2025
Defrost Control Board Operation - Lennox                                                                                                   
Available - April 18, 2025
NATE Core Math                                                                                                                                                       
Available - May 18, 2025
Charging Charts Piston/Fixed Orifice                                                                                                           
Available - June 17, 2025
Schematic Reading and Electrical - Part 1                                                                                               
Available - July 17, 2025
Schematic Reading and Electrical - Part 2                                                                                                 
Available - August 16, 2025
Schematic Reading and Electrical - Part 3                                                                                                 
Available - September 15, 2025
Schematic Reading and Electrical - Part 4                                                                                                 
Available - October 15, 2025
Schematic Reading Rheem Gas Furnace - Part 1                                                                                         
Available - November 14, 2025
Schematic Reading Rheem Gas Furnace - Part 2                                                                                         
Available - December 14, 2025

Videos

Schematic Reading Rheem Gas Furnace - Part
Schematic Reading Rheem Gas Furnace - Part 1

Sign-up

Sign Up