SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION

No Hot Water

1. No Power to heater.
2. Loose wire connections.
3. Inoperative upperheating element.
4. Inoperative upper ther mostat.
5. Open ECO.
6. Inoperative solarcontroller or
connection.
7. Inoperative circulator in solar heating
system.
1. Inoperative lower hea ting element.
2. Thermostats set to l ow.
3. Inoperative thermos tats.
4. Loose wire connection .
5. Sediment or lime build up onelements.
6. High demandperiod.
7. Undersized heater.
8. Very cold inlet water t o heater.
9. Plumbing connections r eversed.
10.D amaged dip tube.
11. Improper solar collector app lication.

Not Enough Hot

Water

Slow Hot Water

Recovery

1. Sediment or lime build up onelements.
2. Loose wire connections.
3. Inoperative thermos tats.
4. Derated heating element installed.

Over Heated

Water or

Continues

Operation

1. Thermostat not in co ntact with tank.
2. Grounded heating ele ments.
3. Thermostat set to hi gh.
4. Inoperative thermos tats.
5. Inoperative ECO.
6. Undersized water heate r.
7. Incorrectly adjusted mixing device.
8. Improperly programmed solar controller .
1. Check fuses or circu it breakers in serv ice panel.
2. Check all wire conne ctions.
3. Check heating elements . Replace as neede d.
4. Check thermostats ope ration. Replace as
needed.
5. Check ECO. Reset or replace thermostats as
needed.
6. Check for proper sola r controller operatio n.
7. Check for proper circulator operation.
1. Check heating elemen ts, replace as neede d.
2. Increase thermostat setting.
3. Checkthermostats, replace as needed.
4. Check all wire conne ction.
5. Remove heating elements and checkfor lime
build up.
6. Reduce demand.
7. Replace with larger he ater.
8. Temper water to heater .
9. Correct plumbing conne ctions.
10.Check dip tube, replace as needed.
11.Review solar collector calculations and
orientation.
1. Remove heating elements and checkfor
lime build up.
2. Check all wire conne ctions.
3. Checkthermostats, replace as needed.
4.Ch eck terminal block of elemen t for proper
voltage and wattage rating.
1. Position thermostat flush with tank surface.
2. Check heating elemen ts. Replace as neede d.
3. Adjust thermostats t o desired setting.
4. Checkthermostats, replace as needed.
5. Check ECO, replace th ermostat as needed.
6. Replace with larger he ater.
7. Adjust mixing device.
8. Refer to solar controll er instructions.

SERVICE

PROCEDURE

3. See Service Procedure
RE-II, Page 9.
4. See Service Procedure
RE-III, Page 10.
5. See Service Procedure
RE-I, Page8.
6. Refer to Controller
manufacturer
7. Refer to circulator
manufacturer
1. See Service Procedure
RE-II, Page 9.
3. See Service Procedure
RE-III, Page 10.
5. See Service Procedure
RE-V, Page 13.
10. See Service Procedure
RE-VI, Page 14.
11. Refer to solarcollector
manufacturer.
1. See Service Procedure
RE-V, Page 13.
3. See Service Procedure
RE-III, Page 10.
1. See Service Procedure
RE-IV, Page 12.
2. See Service Procedure
RE-II, Page 9.
4. See Service Procedure
RE-III, Page 10.
5. See Service Procedure
RE-I, Page8.
7. Refer to included mixing
device instructions.

Page 7

Noisy (singing or

hissing) Elements

1. Lime formation on ele ments. 1. Remove and clean heating elements.
Replace as needed.
1. See Service Procedure
RE-V, Page 13.

TROUBLESHOOTING

Quick Step Plan to Hot Water
1. TURN OFF power to water heater and solar controller.
Check all wire connections to insure they are tight and
corrosion free.
2. Turn power “ON” and determine that service volt age is
present and the high limit (ECO) has not ac tuated
(see procedure on page 8).
3. Check for inoperative heating element (see procedure on page 9).
4. Check for proper thermostat operation (see procedures beginning on page 10). NOTE: Thermostat tes ting procedures
assume items 2 and 3 above are in working or der.
WARNING

High voltage exposure. Use caution when

making voltage checks to avoid personal injury.

NOTICE

This Service Manual is for servicing the solar water heater.
If other components of an installed system requires
service, those questions should be directed to the installer
or the specific component manufacturer.
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