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Household (Townhouse) Central Air Conditioning Unit
17 ： =00 is stopping auxiliary heating, stopping antifreeze; =01 is turning on auxiliary heating, stopping
antifreeze;=02 is stopping auxiliary heating, turning on antifreeze; =03 is turning only auxiliary heating,
turning on antifreeze (it has no meaning to cooling only unit).
18 ： Communication state.
19 ： Error in history.
5 ) Turn On/Off Auxiliary Heater: It is only available for heat pump unit. Press Check once to enter
Check mode. Press ▲ and ▼ to change check object, press Check again till the present check object becomes
"17", value "17" switches between 01/03 (auxiliary heater on) and 00/02 (auxiliary heater off). That is 00 Off
—>01 On —>00 Off, or 02 Off —>03 On —>02 Off.
6 ) Check Parameter: After electrify for 20s, press EXIT then ▲ to enter parameter checking mode.
Under this mode, Auxiliary display area shows the checking object, Main display area displays the value
for the checking object. Press ▲ and ▼ to change the checking object. Press EXIT to quit from the check
mode. Content that can be checked are shown below: Name for Parameter ：
NO.
0
If auxiliary heater is on
1
Set temperature for cooling water out
2
Set temperature for heating water out
3
Begin temp. for defrost
4
End temp. for defrost
5
Set interval between defrost
6
Duration for defrost
7
Antifreeze temp.
8
End temp. for antifreeze
9
Anti overheated temp.
10
Temp. to quit from anti overheated
11
Deviation to set temp.
12
Outdoor ambient temp. for defrost
13
Exhaust pipe high-temp. protect temp.
14
Interval between terminals off and host stops
Name for Parameter
7
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