Thermostats; Circuit Testing - State Water Heaters RESIDENTIAL ELECTRIC WATER HEATER Service Handbook

SINGLE ELEMENT, SINGLE THERMOSTAT CIRCUIT
COMPLAINT:
NO HOT WATER
WATER TOO HOT
WATER NOT HOT ENOUGH
REDUCED HOT WATER
DELIVERY
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Technical Training Department
Ashland City, Tennessee ©2004
RESIDENTIAL ELECTRIC WATER HEATER
SERVICE HANDBOOK
C2 CIRCUIT TESTING
POSSIBLE CAUSE
Power off
High Limit (ECO)
Element Burned Out
Thermostat set above desired
temperature
Element grounded
Thermostat stuck in call for
heat.
Thermostat set at too low a
temperature
Missing or broken dip tube
Sediment accumulation in the
tank.
15 of 36
REMEDY
Check fuse or circuit
breaker.
Press red (reset) button (p.10)
Continuity Check (p. 8) or
amperage check (
Adjust thermostat (p.12) Hot
setting is about 120°F.
Check for grounded element
See diagram (p.9 & 10)
Replace thermostat.
See temperature adjustment
(p, 12)
Check dip tube and replace if
necessary
Clean the tank. Drain the tank
or use a chemical de-liming
agent.
Residential Electric Svc Handbook
STC082