Midea RSJ-420/PZN1-H - Trial Run

MCAC-HTSM-201506 Midea R410A Direct Heating Commercial Heat Pump 50Hz Technical Manual
44
 Dial code specification
S3-1: Remote ON/OFF functional status (OFF: inactive (default); ON: active).
S3-2: Defrost periodical choice (OFF: default time by program; ON: 28 minutes).
S3-3,4: Auxiliary heater choice (OFF: indicates 0, ON indicates 1, the factory default is 00).
Address dial code
0~3 separately stands for address 0~3, means 0~3 set units. When dial the
dial switch to 4 or more for the unit RSJ-420/SZN1-H, and when dial the dial switch to 2 or
more for the unit RSJ-800/SZN1-H, then it will invalid.
Each module of water heat pump has the electric control function. Set the host unit through
the address dial code on electric control board. Stipulate the unit with address dial code 0#
as the host unit. Only after setting the host unit , the function of direct communication with
wired controller and other function can be activated.
3. Trial run
When use the wired controller to operate the water heater, please check as the following list:
No.
Item
Remark
1
Whether the unit is installed firmly.
2
Whether the air inlet and outlet of the unit has obstacle.
3
Whether the dial codes of each unit has dial to the correct position.
4
Whether check the leakage of the water system.
5
Whether the water system is clean.