Service Manual

Page 15
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Quick Step Plan to Hot Water
1. STOP, DANGER! Turn power “OFF” to water heater.
2. Check all wire connections to ensure they are
snug and corrosion free.
3. Reset High-Limit (ECO) (page 18).
4. Check for inoperative heating element (page 15).
5. Check line voltage (page 16), and internal fuses (page 17).
6. Refer to table below if items 1 through 5 above do not correct problem.
SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION
SERVICE
PROCEDURE
No Hot Water
1. No power to heater.
2. Blown water heater fuses.
3. Loose wire connections.
4. Inoperative heating element(s).
5. Check thermostat operation.
6. Reset (check) ECO.
7. Check contactor operation.
1. Check circuit breakers at service panel.
2. Check water heater fuses.
3. Check all wire connections.
4. Check heating element(s).
5. Check thermostat operation.
6. Reset (check) ECO.
7. Check contactor operation.
2. ACE-III, page 17
4. ACE-I, page 15
5. AVE-V, page 19
6. ACE-IV, page 18
7. AVE-VI, page 20
Not Enough
Hot Water
1. Inoperative heating element(s).
2. Thermostat set to low.
3. Inoperative thermostat.
4. Inoperative contactor(s).
5. Loose wire connection.
6. High demand period.
7. Undersized heater.
8. Very cold inlet water to heater.
9. Plumbing connections reversed.
1. Check heating element(s).
2. Increase thermostat setting.
3. Check thermostat.
4. Check contactor operation.
5. Check all wire connections.
6. Reduce demand.
7. Replace with larger heater.
8. Temper water to heater.
9. Correct plumping connections.
1. ACE-I, page 15
3. ACE-V, page 19
4. ACE-VI, page 20
Slow Hot
Water
Recovery
1. Sediment or lime build up on
element(s).
2. Loose wire connections.
3. Inoperative contactor(s).
4. Derated heating element installed.
1. Clean or replace heating elements.
2. Check all wire connections.
3. Check contactor operation.
4. Verify element voltage and wattage
rating.
1. ACE-IX, page 23
3. ACE-VI, page 20
4. See page 6
Over Heated
Water
1. Grounded heating element(s).
2. Thermostat set to high.
3. Inoperative thermostat.
4. Inoperative ECO.
1. Check heating element(s).
2. Adjust thermostat to desired setting.
3. Check thermostat.
4. Check ECO.
1. ACE-I, page 15
3. ACE-V, page 19
4. ACE-IV, page 18
Noisy (singing
or hissing)
Elements
1. Lime formation on elements.
2. High or low line voltage.
1. Clean or replace heating elements.
2. Verify line voltage to heater.
1. ACE-IX, page 23
2. ACE-II, page 16
Noisy
Contactor
1. Low line voltage.
2. Debris between contactor plates.
3. Incorrect or defective operating coil.
4. Loose wire connections.
1. Verify line voltage to heater.
2. Replace contactor.
3. Check wire connections.
1. ACE-II, page 16
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