How can I get help or technical support for the TH8320U thermostat?
For assistance, you can visit http://customer.honeywell.com or call Honeywell Customer Care toll-free at 1-800-468-1502. Both options are available to help with installation and troubleshooting. (Page 1)
From the official Honeywell Th8320U1008 Thermostat manual, page 1
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