Midea RSJ-420/PZN1-H - Page 45

Midea R410A Direct Heating Commercial Heat Pump 50Hz Technical Manual MCAC-HTSM-201506
45
6
Whether the filter is clean.
7
Whether the water drain is smoothly.
8
Whether complete the heat insulation of the water pipe.
9
Whether vacuum the pipeline of water side.
10
Whether all the valves in the water side pipeline are under correct status.
11
Whether the water flow switch work well.
12
Whether the grounding correctly.
13
Whether the power voltage meets the requirements of the unit.
14
Whether the leakage protector can work effectively.
When use the wired controller to operate the water heater, please check as the following listed:
No.
Item
Remark
1
Whether all the buttons of wired controller are normal.
2
Whether the input voltage of the unit meet the requirements of the unit.
3
Whether the electronic lock has been unlocked.
4
Whether the water outlet temperature is normal.
5
Whether there is any abnormal vibration and noise during operation.
Notes:
The unit also has one function; it can easily to make the unit enter other modes.
Enter ‘Debugging replenishing’ method: Long press ‘CHECK’ button for 3~20s within 1 minute after
power on, then the digital screen will display ‘0’ and be flashed with 2Hz frequency, means enter to
the function selection state. Short check, the digital screen will successively display each
corresponding number:
No. 4: Capacity testing mode I;
No. 5: Drain water mode;
No. 6: Force cycle pump operating;
No. 8: Force defrosting;
No.10: Capacity testing mode II.
After 5s, the digital pipe will flash with 1Hz frequency; means has already entered the debugging
replenishing function.