Fujitsu AUYG18LVLB User Manual

6. SYSTEM DESIGN
BASE HEATER

A base heater is a heating element that may be installed to melt the ice that may accumulate in 
the condenser drain pan.
This output signal is produced when the outdoor temperature drops down to 2°C, and releases at 
4°C.
Circuit diagram example

1
2
3
4
Connector
AC240V
Base heater
*2
*1
connected unit
P.C. B
*1: Connect to pin 1 and pin 3. No connection pin 2 and pin 4.
*2: The allowable Input Power is 25W or less.
1
2
3
4
Connector
AC240V
Base heater
*3
*1
connected unit
P.C. B
*3: If a load greater than 25W is applied, a contactor or relay should be used to operate and control the base
heater.
ON
OFF
Operation
Stop
Heater
Output signal
status
Parts (Optional)

Parts name External connect kit
Model name UTY-XWZ X Z4
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SYSTEM DESIGN SYSTEM DESIGN

Fujitsu AUYG18LVLB Specifications

General

Brand	Fujitsu
Model	AUYG18LVLB
Category	Air Conditioner
Language	English