Nature of trouble – Part 7: Troubleshooting – 45
Part 7: Troubleshooting
Nature of trouble Possible cause Service
No hot water.
Improper wiring.
Check controller and tank wiring.
No Power – blown
fuse or circuit breaker
tripped.
a. Shorted wiring.
Replace or repair.
b. Circuit overloaded.
Provide adequate circuit or reduce
load.
c. Improper wiring.
Rewire per wiring diagram.
d. Grounded element
or thermostat.
Replace.
Manual reset limit
(ECO) open.
Refer to “Operation”
Section.
a. Thermostat
defective.
Replace thermostat.
b. Thermostat out of
calibration.
Lower setting or replace.
c. Heat build-up due
to loose wires.
Tighten wire connections.
d. Defective Limit
(ECO).
Replace.
Solar system controller incorrectly installed.
Check installation.
Defective storage tank element.
Replace element.
Leaking plumbing or open hot water faucet(s).
Make sure all faucet(s) are closed and
check water meter.
Not enough hot water.
System undersized. Reduce rate of hot water use.
Defective element. Check amperage, replace element.
Defective thermostat or wired incorrectly. Check wiring or replace.
Solar system controller incorrectly installed.
Check Installation.
Leaking plumbing or open hot water faucet(s).
Make sure all faucet(s) are closed and
check water meter.
Water too hot or not hot
enough.
Thermostat setting too high or low. Change setting as required.
Thermostat out of calibration. Replace.
Solar system incorrectly installed. Check installation.
Grounded element. Replace.
Noisy tank heating element. Scale build-up on element. Remove and clean.
Rattling noise in tank during
periods of water usage.
Tank internal heat trap fi ttings in operation. None. Normal for heat trap fi ttings.
Water pressure too high. Check and call local utility if necessary.
Scale build-up inside storage tank. Drain and fl ush tank.
!
CAUTION
For your safety, do not attempt repair of electrical wiring, thermostat, heating element or other operating controls. Refer
repairs to qualifi ed service personnel.
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