Lochinvar 100 Series User Manual

Commercial Electric Water Heaters • 41
TROUBLESHOOTING
Before calling for service, check the following points to see if the
cause of trouble can be identied and corrected. Reviewing this
checklist may eliminate the need of a service call and quickly restore
hot water service.
The illustration in the Features and Components (page 8) identies
the location of most of the heater components.
● Before removing any access panels or
servicing the water heater, make sure
the the electrical supply to the water
heater is turned OFF.
Electrical Shock Hazard
● Failure to follow these instructions can
result in personal injury or death.
BE SURE TO TURN OFF THE ELECTRICITY (ELECTRICAL
DISCONNECT SWITCH) WHEN CHECKING EQUIPMENT.
NOT ENOUGH OR NO HOT WATER
1. Be certain the electrical disconnect switch serving the water
heater is in the ON position. The pilot toggle switch on the cabinet
should be ON.
In some areas water heater electrical service may be limited
by the power company. If the heater operates on a controlled
circuit, heater recovery may be a󰀨ected.
The optional manual override switches on the cabinet front may
be turned o󰀨, de-energizing the elements.
2. Check the fuses.
The electrical disconnect switch usually contains fuses.
The water heater has fuses located behind the cabinet front
door. See Features and Components (page 8) for their location.
3. If the water was excessively hot, and is now cold, the ECO high
limit switch may have activated.
See Temperature Regulation (page 17) for more information on
how to reset the ECO high limit controls.
Repeated activation of the ECO high limit switch should be
investigated by a qualied service technician or qualied agency.
4. The storage capacity and/or recovery rate of the water heater
may have been exceeded by a large demand for hot water. See
Table 1 (page 9) in this manual.
Large demands require a recovery period to restore water
temperature.
5. Cold incoming water temperature will lengthen the time required
to heat water to the desired temperature.
6. If the heater was installed when incoming water temperature was
warm, colder water creates the e󰀨ect of less hot water.
7. Sediment or lime scale may be a󰀨ecting water heater operation.
See Maintenance (page 35) for details.
WATER IS TOO HOT
See Temperature Regulation (page 17).
WATER HEATER MAKES STRANGE SOUNDS
8. Sediment or lime scale accumulations on the elements causes
sizzling and hissing noises when the heater is operating.
The sounds are normal, however, the tank bottom and elements
should be cleaned. See Maintenance (page 35) for details.
9. Some of the electrical components of the water heater make
sounds which are normal, for example, contactors will click or
snap as the heater starts and stops.
IF YOU CANNOT IDENTIFY OR CORRECT THE SOURCE
OF MALFUNCTION:
10. Place the water heater electrical disconnect switch in the OFF
position.
11. Close the cold water inlet valve to the heater.
12. Call the toll free number on the back cover of this manual for
further assistance.

Lochinvar 100 Series Specifications

General

Brand	Lochinvar
Model	100 Series
Category	Water Heater
Language	English