8. PROTECTION AND FAILURE
8.1 High Temperature Warning and Speed Reduction
During normal operation (except backwash/self-priming), when the pump control system reaches the high temperature warning trigger
threshold (178°F), it enters the high temperature warning state; when the temperature drops from the high temperature warning release
threshold (172.4°F), the high temperature warning state is released. The display area alternately displays AL01 and running speed or flow.
1) If AL01 displayed for the first time, the running capacity will be automatically reduced as below:
a. If current operating capacity is higher than 85%, the running capacity will be automatically reduced by 15%;
b. If current operating capacity is higher than 70%, the running capacity will be automatically reduced by 10%;
c. If current operating capacity is lower than 70%, the running capacity will be automatically reduced by 5%.
2) Suggestion for non-first displayed of AL01: check the module temperature every 2 minutes. Compared with the temperature in the
previous period, for every 1-degree Celsius increase, the speed will decrease by 5%.
8.2 Undervoltage protection
When the device detects that the input voltage is less than 197V, the device will limit the current running speed.
When input voltage is less than or equal to 180V, the running capacity will be limited to 70%;
When the input voltage range is within 180V ~ 190V, the running capacity will be limited to 75%;
When the input voltage range is within 190V ~ 197V, the running capacity will be limited to 85%.
8.3 Troubleshooting
Problem
Pump does not start.
Pump does not prime.
Low Water Flow.
Pump being noisy
8.4 Error code
Item
Error Code
Description
1
E001
Abnormal input voltage
2
E002
Output over current
E003
No water Protection
3
E101
Heat sink over heat
4
Heat sink sensor error
5
E102
6
E103
Master driver board error
E104
Phase protection
7
E105
AC current sampling circuit failure
8
DC abnormal voltage
E106
9
Note:
1. When E002/E101/E103 is displayed, the device will resume working automatically, however when it appears a fourth time,
the device will stop working, to resume operation, unplug the device and plug in & restart again.
12
INVERFLOW
Possible causes and solution
• Power Supply fault, disconnected or defective wiring.
• Fuses blown or thermal overload open.
• Check the rotation of the motor shaft for free movement and lack of obstruction.
• Because of long time lying idle. Unplug the power supply and manually rotate motor rear shaft a
few times with a screwdriver.
• Make sure the pump basket is filled with water and the O-ring of cover is clean.
• Loose connections on the suction side.
• Strainer basket or skimmer basket loaded with debris.
• Suction side clogged.
• Distance between pump inlet and liquid level is higher than 2m, height of pump installation should
be lowered.
• Pump does not prime.
• Air entering suction piping.
• Basket full of debris.
• Inadequate water level in pool.
• Air leak in suction piping, cavitation caused by restricted or undersized suction line or
leak at any joint, low water level in pool, and restricted discharge return lines.
• Vibration caused by improper installation, etc.
• Damaged motor bearing or impeller (need to contact the supplier for repair).
Item
Error Code
Description
10
E107
PFC protection
11
E108
Motor power overload
1 2
Circuit board error
E201
RTC time reading error
E203
1 3
Display Board EEPROM
1 4
E204
reading failure
1 5
E205
Communication Error
16
E209
Loss of prime