Chapter 9. TROUBLESHOOTING
9-4 Replacing the Battery
CAUTION 
Before replacing the battery, be sure to turn the power OFF. Failure to do so might cause electric shock.
Do not touch internal components immediately after turning the power OFF to replace the battery. Doing so might cause burns.
• Do not insert the battery with the polarities
• Do not use damaged (broken battery skin, leaking battery fluid) batteries.
•Do not throw batteries into fires, or charge,
•Store batteries in
Failure to observe the above cautions may cause batteries to emit heat or split, or battery fluid to lead.
Store batteries out of the reach of small children.
Batteries are small and are easy to swallow. If a child swallows a battery, consult a physician immediately.
Return used batteries to Honeywell sales/service office or your dealer. When disposing of used batteries at the user site, observe local bylaws.
Handling Precautions
•Before handling components inside the controller, touch a grounded metal part to remove any static electricity from the body. Static electricity may cause dam- age to controller components.
•Batteries left in storage for a long time discharge electricity, reducing their ser- vice life. Purchase new batteries as required.
The parameter setups and program setups on the DCP301 are stored to battery backed up memory (RAM). So, stored setups are held in memory even if the controller is turned OFF.
However, when battery voltage becomes low, stored setups are no longer held in memory when the controller is turned OFF.
■BAT LED blinking
When low battery voltage is detected, the BAT LED on the console blinks. The voltage level for detection of low battery voltage is set higher than the required voltage level for holding stored setups in memory.
Accordingly, as soon as the BAT LED starts blinking, stored setups can still be held in memory. However, if the controller is turned back ON after being left for a long time and the BAT LED blinks, setups stored to memory may be damaged.
■Items to prepare
• Phillips head screwdriver
• New lithium battery: | Model No. |
