Honeywell T8090A Owner's Manual page 22

Troubleshooting (Continued)
Problem
Clock loses time.
(continued).
Applicable to heating-cooling subbase only.
1
If clock is not battery powered, clock can use batteries for backup.
2
If this Troubleshooting section has not solved the problem, call a qualified heating service
technician or Honeywell Customer Assistance Center, 1-800-468-1502, Monday-Friday, 7:00 AM to
5:30 PM, Central time, for additional assistance.
Check
— batteries may need
replacement.
Replace with two new AAA alkaline batteries as
shown in Fig. 2.
22
Action
69-0628B—1