Section 7 – Troubleshooting
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Section 7. – Troubleshooting
7.1
General Error Messages from the easyCHEM 770
Error Message
Possible Causes
Remedy
Fact Cal Failure
maybe Inaccurate
The EEPROM chip which
contains the factory
calibration information has
failed.
The unit must be returned to TPS for
service.
EEPROM Failure
Factory repair
User calibration settings have
been lost or corrupted.
Switch the meter OFF and switch back
ON. If the problem persists, return the
unit to TPS for service.
7.2 General
Faults
Symptom Possible
Causes
Remedy
Main Pool Pump does
not operate when
easyCHEM 770
activates output
1. Pool pump power lead not
correctly connected to
POOL PUMP
socket.
2. Output Fuse is blown.
Ensure that the Pool Pump’s power
plug is firmly connected to the
POOL
PUMP
output socket.
Replace output fuse, as per details in
section 7.7. If fuses continue to blow,
your Pool Pump may be drawing too
much power, or it may be faulty.
Not Dosing. “PUMP”
Error message
displayed.
Excess Dosing pump current
detected.
Press Tech Menu to reset error. If error
re-occurs dosing pump will require
service.
7.3 ORP
Troubleshooting
Symptom Possible
Causes
Remedy
ORP reading inaccurate
1. Platinum tip of ORP
sensor dirty.
2. Reference junction of pH
sensor dirty.
Clean Platinum tip of ORP sensor by
dipping into a 1:10 mix of Hydrochloric
acid for 10 to 20 seconds, or sand with
800 to 1200 grade wet-and-dry
sandpaper.
If problem persists, adjust the set point
to compensate for variation in reading.
Dip pH sensor into a 1:10 mix of
Hydrochloric acid for 10 to 20 seconds.
Re-calibrate ORP in ZoBell solution
(section 5.3).
If problem persists, adjust the set point
to compensate for variation in reading.
ORP reading seems low
compared to Chlorine
test kit
Pool water is out of balance
Have sample of pool water tested by a
pool professional to check its chemical
balance. Check at least the following…
•
Cyanuric Acid (sunscreen)
•
Alkalinity
•
pH
(your
easyCHEM 770
) tests
this).
•
Free and Combined Chlorine levels.
Once the above have been rectified, it
may be necessary to Super-chlorinate
your pool to oxidise undesirable
Chloramine compounds. Your pool
professional can advise on this. See
section 6.5 for details on using the
easyCHEM 770
for super-chlorinating
your pool.
