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3.4 Back Up Battery
3.4.1 Specifications
DECOS
3
e controller can use two types of batteries; DRY or Rechargeable (Optional).
The battery is attached to the lower part of the controller.
DRY Battery: 9V block battery. (This can be purchased locally.)
Rechargeable battery: Daikin genuine product (Part NO. 1890491)
3.4.2 Function
This battery is used without main power supply for the following functions.
When commercial power supply is not available, backup battery can be used as power supply to display
and set the following items.
Refer to 3.2.2 (3. Battery mode).
3.4.3 Checking the remaining battery voltage
1) Checking the remaining battery voltage
The remaining battery voltage can be checked during operation in accordance with 3.2.2 (6. Sensor
indication mode).
When the unit does not run or commercial power supply is not available, the remaining battery voltage
can be checked in accordance with 3.2.2 (3. Battery mode).
The remaining voltage
7.6V or more: The battery has been charged.
7.5V or less : The battery may have deteriorated. It is recommendable to replace the battery.
7.1V or less : The battery has deteriorated. The battery must be replaced.
●
Things to keep in mind when checking the remaining voltage
Make sure that the unit has run for 14 hours at least or commercial power supply has recharged for 14
hours at least with the circuit breaker ON (the unit OFF) before checking the remaining voltage.
Recharging for 14 hours at least is a must.
2) USDA data log
3) Trip data log
DRY Battery
(Purchased locally)
△
1) Display wake up
Rechargeable
(Optional)
: Available
△
: Varies according to customer specifications : Not available
1) Display function
Return air temperature indication (RS)
Supply air temperature indication (SS)
Ventilation amount indication (FA)
USDA & CTS temperature indication
High pressure indication (HPT)
Low pressure indication (LPT)
Full-PTI record indication
Short-PTI operation day record indication
Chilled-PTI operation day record indication
Frozen-PTI operation day record indication
Remaining battery voltage indication (BAT)
2) Setting function
Control temperature setting (SP)
Control humidity setting (RH)
Defrosting interval setting (Def)
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