Fujitsu ARHG24LMLA User Manual

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Auxiliary heater output
When indoor unit fan and compressor is turned on in heating operation, the signal is output from
connector.
Specifications of the signal output performance are as shown as follows:
Example: When set temperature (Ts) is set at 22 °C;
• And room temperature (Tr) increase above 12 °C,
signal output is ON.
• And Tr increase above 21 °C, signal output is
OFF.
• And Tr decrease below 19 °C, signal output is ON.
• And Tr decrease below 10 °C, signal output is
OFF.
OFF
OFF
ON
Tr-Ts = -1 °C
Tr-Ts
Tr-Ts = -3 °C
Tr-Ts = -10 °C
Tr-Ts = -12 °C
 Fan delay setting
This is used to continue the indoor unit fan operation for 1 minute after thermo OFF in heating
mode.
For the detail setting on fan delay setting, refer to “Function settings on indoor unit” in "Func-
tion settings" on page 24.
 Circuit diagram example
Locally purchased
Indoor unit
control PCB
Connector
1
12 V
On/Off
2
Signal
Relay
power
supply
Example: Heater
Connected unit
Example: Relay unit
*10 m
• *: Make the distance from the PCB to the connected unit within 10 m.
• Relay spec: Rated DC 12 V, 50 mA or less.
ON
OFF
Operation
Stop
Heating
operation
Indoor unit fan
ON
OFF
Output signal
1 min
CAUTION
• Place an external heater between the indoor unit and the outlet.
External
heater
Supply air Return air
Indoor
unit
• Be sure to use delay control of the fan.
DESIGN & TECHNICAL MANUAL
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DUCT TYPE ARHG24LMLA

Fujitsu ARHG24LMLA Specifications

General

Brand	Fujitsu
Model	ARHG24LMLA
Category	Air Conditioner
Language	English