Ispring RO500 - Fault Codes and Troubleshooting; Filter Service Life Indicator Guide

3) Fault Codes
Type
Reminder
Solution
Display code Buzzer
E1: Water shortage
prompt
The fault light flashes red
once per second.
Filter CF Filter flashes
blue once per second.
When the user runs
water, the machine
will buzz three times.
Once the inlet water
pressure returns to
normal, the water
shortage prompt is
automatically
reconciled, and the
machine resumes
regular operation.
E2: Water leakage
protection
The fault light flashes red
once per second.
Filter RO Filter flashes
blue once per second.
The buzzer will sound
for 3 minutes.
Identify leakage
source. Once
corrected, the product
automatically returns
to regular operation.
E3: Timeout
protection for
continuous pump
operation
The fault light flashes red
once per second.
Filter CB Filter flashes
blue once per second.
The buzzer will sound
four times.
Reconnect to the
power supply.
E4: Start-stop
protection for
frequent pumping
The fault light flashes red
once per second.
Filter CF+RO Filter
flashes blue once per
second.
The buzzer will sound
five times.
Reconnect to the
power supply.
E5: Low-
temperature
protection
The fault light flashes red
once per second.
Filter CB+RO Filter
flashes blue once per
second.
The buzzer will sound
six times.
Reconnect to the
power supply.
4) Filter Service Life Display
Service Life Stage
Remaining Life
(Days)
Remaining
Capacity
(net water/liter)
Prompt
Indicator Color Buzzer
Normal
＞15 ＞150
Blue None
Warning 0 - 15 0 - 150 Purple Sounds twice.
Alarming 0 0 Red
Sounds when
water is flowing.
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