Lily Tech ZL-R200A User manual

Suzhou Lily Tech. Co., Ltd.
Page 1, Total 4 Pages
ZL-R200A Heat Pump Water Heater Controller
Instruction Manual V1.0c
Main Function
Auxiliary heating function
Water flowing warning
Ventilation pump control
Antifreeze function
Sensor failures action
Auto defrost function
Auto restart function
Exhaustion temperature protection
Compressor delay and pressure protection
Technical Specification
Sensor:
NTC 10K/3470
Set range:
20 ~ 60℃
Display range:
-40 ~ 130℃
Working temperature:
0~ 50℃
Storage temperature:
-10 ~ 60℃
Ambient humidity:
20 ~ 85%RH without dew
Power supply:
220Vac ±10% 50/60Hz
Load:
Compressor 15A
Heating 8A
Others 3A
Failure Code
No.
Code
Failure
No.
Code
Failure
1
E01
Water container sensor failure
5
E05
Water flow warning
2
E02
Pipe Coil sensor failure
6
E06
High/low pressure input warning
3
E03
Exhaustion sensor failure
7
E07
Data saving failure
4
E04
Outdoor sensor failure
8
E08
Communication failure
Display Indication
Icon
Display
Not shown
Icon
Displaying
Not shown
Online
Offline
Compressor running
Compressor stop
Heating
Not heating
Pump running
Pump stop
Electrical heating
Electrical heater off
Four valves on
Four valves off
Outdoor fan running
Outdoor fan stop
Locked
Unlocked
Defrosting
Not defrosting now
Key Operation
Temperature Inquiry
Press key to check all sensors’ temperature consecutively. The result keeps displaying for 3 seconds.

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Page 2, Total 4 Pages
On/Off
Keep key depressed for 3 seconds to switch between online and offline.
Set (water) Temperature (SP)
Press key to set temperature. Keep depressed can fast set. Factory default set is 40℃.
System Parameter Set
Keep depressed for 3 seconds, the big digits show “P00” for password entering.
Press key to set password, press to confirm.
If the password is wrong, exit. Else enter into parameter set status:
Press to select parameter. Press to show the value of the parameter.
Press to set the value. Press to return back to parameter selection.
Keep depressed for 3 seconds to save the settings, and exit.
The status will exit, if there is no key operation for 15 seconds, and the settings will not be saved.
System Parameter Table:
No.
Code
Setting function
Range
Indication
Default
1
U01
Hysteresis
2~ 10℃
5
2
U30
Defrost start time
10 ~ 90 min
45
3
U31
Defrost start temperature
-9 ~ 0℃
-5
4
U32
Defrost stop temperature
2~ 30℃
10
5
U33
Maximum defrost time
2~ 15 min
8
6
U34
Valve mode
0~ 1
0: heat off, defrost on
1: heat on, defrost off
0
7
U50
Exhaust protection temperature
50 ~ 125℃
110
8
U51
High/low pressure warning mode
0~ 2
0: Disable
1: Closed when warning
2: Open when warning
0
9
U52
Water flowing switch mode
0~ 2
0: Disable
1: Effective when closed
2: Effective when open
0
10
U80
Auto restart function
0~ 1
0: Disable; 1: Enable
0
11
U81
Keypad lock
0~ 1
0: Unlocked; 1: Locked
0
12
U90
passwords
00 ~ 99
11
Working Mode
Press to switch between “AUTO” and “SAVE” working mode.
“AUTO” mode: always heating according setting.
“SAVE” mode: only heating within three set periods.
When “Auto restart function” is disabled, it will be “AUTO” mode after power supplied.
Clock Setting
Press key, the hour digits will blink, press key to set hour.
Press key again, minute digits will blink, press key to set minute.
Press key to exit.
Periods Setting for “SAVE” Mode
Keep key depressed for 3 seconds to enter the period setting.
Press key to select the period and on/off. Press to set the value of the time.
Keep key depressed for 3 seconds to save the settings, and exit.
The status will exit, if there is no key operation for 15 seconds, and the settings will not be saved.
The maximum periods are 3. Every period has a on-time and a off-time.
If one period’s on-time = off-time = 0, this period will be shut off.
If one period’s off-time is earlier than its on-time, this off-time is the time of the 2nd day.
Keypad Lock
When U81 = 1, only and have reaction.

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Page 3, Total 4 Pages
Control Function
Temperature Control
When T-water ≤SP –U01, start heating.
When T-water ≥SP, stop heating.
Heating start procedure:
Pump is on; 30 seconds later, outdoor fan is on, valve takes action; 30 seconds later, compressor is on.
Heating stop procedure:
Compress is off; 30 seconds later, outdoor fan is off, valve takes action; 30 seconds later, pump is off.
Note: the four-way valve works according to U34.
Aux Electrical Heater Control
When T-water ≤SP –U01
If T-outdoor ≤10℃, electrical heater is on.
If T-outdoor ≥12℃, electrical heater is off.
When T-water ≥SP, electrical heater is off
Note: Heater will be on during defrosting.
Water Ventilation Pump Control
The pump will be on 60 seconds before the compressor is on, be off 60 seconds after the compressor is off.
The pump will always be on during defrosting.
If there is no water flowing for 10 seconds, stop compressor and heater, and keep warning.
When the water flowing restores, restore the system control
Avoid Freezing in Winter (in Offline Standby State)
When T-outdoor ≤2℃, start anti-freezing pumping, the pump run 3 minutes for every 30 minutes.
When T-outdoor ≥ 3℃, stop this anti-freezing protection pumping.
Auto Defrost
Start auto defrosting: When compressor has been running for U30, and if T-pipe ≤U31, start defrosting.
Compressor and outdoor fan stop; 55 seconds later, valve acts; 5 seconds later, start compressor.
Stop defrosting: When T-pip ≥U32, or the compressor has been running for U33, stop defrosting.
Stop compressor; 55 seconds later, valve acts; 5 seconds later, start heating control.
Defrost after turning the system online: When turn online, if the T-pipe ≤U31, defrost 1st.
Timer Defrost
If pipe sensor fails，and the compressor has been running for U30, and
If outdoor sensor is ok, and T-outdoor ≤ U31, start defrosting.
If outdoor sensor fails, start defrosting.
Exhaustion Over Temperature Protection
During compressor is on, if T-exhaustion ≥ U50, stop compressor.
When T-exhaustion ≤ U50-10℃, stop protection, and start heating control again.
High/Low Pressure Warning and Protection
When compressor running, if the high/low pressure is effective for 15 seconds, start pressure protection:
Stop compressor, until the high/low pressure is not effective.
If the pressure protection occurs 3 times within an hour, or once high/low pressure effectiveness keeps for
one hour, the controller will be in machine protection mode:
Never start heating again, until stop power supply and supply power again.
When compressor has just started, the high/low pressure is not check for 3 minutes.
Note: the high/low pressure mode is set in U51.
Compressor Delay Protection
After power supplied, the compressor can start after 3 minutes.
After compressor stops, it can re-start 3 minutes later.
Water Sensor Failure Warning
When this sensor fails, system stops heating.

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Page 4, Total 4 Pages
Wiring Diagram
Attention
Set U34 correctly, otherwise system does not work correctly.
The real clock can only keep running correctly for 72 hours after power supply loses.
All sensors must be installed at correct position.
Do not plug in/out panel bundle with power supplied.
Panel should be installed indoors, instead of outdoors.