IPS Controllers M920 - Chlorine;Bromine Level Too Low or Alert LED On

M920 & M920W pH/Dual ORP Controller Owner’s Manual
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V. Troubleshoong
A.pHleveltooloworAlertLedOn
1. pH Set level is too low: Check pH level with test kit and adjust as
necessary.
2. Chemical dose me too high: Lower dose me.
3. Chemical feeder is empty (base): Rell the feeder.
4. Sensor malfuncon: Replace sensor.
*Low alkalinity can also cause pH to dri to lower levels. Always target
80-120ppm
B.pHleveltoohighorAlertLEDOn
1. Sensor p is dirty: Clean according to maintenance
instrucons.
2. Improper pH sensor calibraon: Adjust pH calibraon.
3. Chemical feeder is empty (Acid): Rell the feeder.
4. Chemical feed pump or squeeze tube malfuncon: Repair the feed
pump or replace the squeeze tube. A squeeze tube will last 3-6
months for commercial properes and 6-12 months for residenal
properes.
5. Chemical dose me too low: Increase dose me.
*High alkalinity will require more acid than usual to maintain pH levels.
Always target 80-120ppm
C.Chlorine/BromineleveltooloworAlertLEDOn
1. pH should be at your desired set level before addressing any
potenal ORP problems.
2. ORP Set level is too low: Check Sanizer level with test kit and adjust
set Level as necessary