Hitachi Set Free mini-HNRQ1 Series, Service Manual

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EXTERNAL INPUT/OUTPUT AND FUNCTION SETTING
2. Exteral Input and Output Settings
On the outdoor unit Printed Circuit Board (PCB1), there are three input terminals (CN1, CN2 as shown below)
to receive external signals and two output terminals (CN7 as shown below) to send signals out. Control functions
shown in these tables are available when setting input and output terminals.
2.1 Definition of External Input and Output Settings
● Input:
Control
Function No.
Setting Function for Input
1 Fixing Heating Operation Mode
2 Fixing Cooling Operation Mode
3 Demand Stoppage
4 Outdoor Fan Motor Start/Stop
5 Forced Stoppage
6 Demand Current Control 40%
7 Demand Current Control 60%
8 Demand Current Control 70%
9 Demand Current Control 80%
10 Demand Current Control 100%
11 (*1) No Setting
(*1): Control Function No.11 is valid only when applied to Input Setting 3.
● Output:
Control Function No. Setting Function for Output
1 Operation Signal
2 Alarm Signal
3 Compressor ON Signal
4 Defrosting Signal
● Input/Output Terminal:
Input Terminal Name Connector (Pin No.)
Factory Setting
Control Function No. Setting Function
Input Setting 1 CN1 (1-2) 1 Fixing Heating Operation Mode
Input Setting 2 CN1 (2-3) 2 Fixing Cooling Operation Mode
Input Setting 3 CN2 (1-2) 3 Demand Stoppage
Output Setting 1 CN7 (1-2) 1 Operation Signal
Output Setting 2 CN7 (1-3) 2 Alarm Signal
The following functions have been already set at the factory.