Honeywell/Resideo Thermostat for Crestron Home™ driver

It is recommended that you save a configuration or golden configuration before installing any driver.

Each developer account is limited to a certain number of access to Honeywell Home’s API every month. To get around this problem, we require that you create and use your own developer account.

Not necessarily, when you first install the driver and enter the authorization code, if it’s successful, it will create a config file on the processor. This config file will remain on the processor unless you manually remove it. When you install a new version of the driver, leave the authorization code empty and it will automatically pick up the file and use the information in their to make its request. It is important that the instance number matches the previous driver.

The problem is Honeywell doesn’t let you authorize any thermostats that have been paired with the TCC app for third party control via the Honeywell Home API. Until Honeywell allows the authorization, TCC thermostats remain unsupported by this driver. There is a dedicated API for TCC thermostats but we have been unsuccessful so far in getting access. If you know someone from Honeywell/Resideo who can help, please don’t hesitate to reach out and get us connected.

• Make sure the processor has access to the internet.
• Make sure you are not re-using the authorization code. Once an authorization code has been used, it can not be used again.
• Make sure you use the authorization code within 1 minute of generating it. It has a very short expiration time (aprox. less than 1 minute).
• Make sure you are using the proper case when specifying the location name. (case-sensitive).
• Make sure that when you defined the app in the http://developer.honeywell.com website, you specified the return url/uri as None and not none (case sensitive).

The concept of the instance number is the same as how it’s used in the Crestron SIMPL HVAC Scheduler module. The instance number is used to create a unique filename on the processor so that it stores the token information needed to make requests. In normal circumstances you can leave it as one. You would need to change the instance number if the thermostats were paired to separate user accounts and you wanted to provide them access to thermostats from both accounts. An example of this is if the main house thermostats are paired to one user account and the guest house thermostats are paired to a separate user account. If you want thermostats from both properties to show up, you would need to add 2 instances of the platform driver, and each instance would need a unique instance number to work properly.

Unfortunately yes, if you add thermostats, you have to go through this process again. This is a security feature from Honeywell. The authorization only allows you access to the thermostats that have been allowed. Since the newly added thermostats were not allowed, the driver can’t get access to it. The process is similar to updating the driver. First make sure you check the option to delete the configuration file in the drivers Installer Setup option. Then uninstall the driver. If you don’t check the option to delete the configuration file, it will just pick up the old (now stale) authorization data and the new thermostat won’t show up. It’s recommended that you wait until all the thermostats have been installed before going through the process of getting them to work with this driver.