Household (Townhouse) Central Air Conditioning Unit
7
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. Name for Parameter
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
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