SECTION IV – TROUBLESHOOTING

Symptom

Probable Cause

Corrective Action / Remedy

No hot water

Circuit breaker tripped at source.

Reset circuit breaker.

 

On/Off switch in ‘OFF’ position

Turn switch to ‘ON’ position

 

Blown fuse in transformer, if

Replace fuse.

 

installed.

 

 

High limit switch tripped.

Reset high limit switch.

 

 

 

 

Loose wires.

Tighten wires. Torque screws

 

 

per torque chart included in

 

 

Section VI.

 

Heating element inoperable.

Check heating element

 

 

operation by clamping an

 

 

Amprobe around each wire to

 

 

the element. The ampere

 

 

reading should agree with the

 

 

nameplate ‘AMP’ figure.

 

Low line voltage.

Have source electrical system

 

 

checked by an electrician.

 

Faulty thermostat.

Move thermostat dial through

 

 

full range. A definite ‘click’

 

 

should be heard. If not, replace

 

 

thermostat.

 

Faulty low water cut-off, if

Check to see if tank is full of

 

installed.

water. If not, fill tank. If problem

 

 

continues and tank is full, check

 

 

for continuity between the

 

 

common and normally open

 

 

contact of the relay board. If

 

 

continuity is not observed,

 

 

replace low water cut-off.

 

Magnetic contactor does not

Replace complete magnetic

 

energize.

contactor. Because of the design

 

 

of this particular contactor, it is

 

 

more desirable to replace

 

 

complete control rather than

 

 

rebuilding coil, contacts and

 

 

springs, etc.

 

 

 

18

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Hubbell Electric Heater Company manual Section IV Troubleshooting, Symptom Probable Cause Corrective Action / Remedy

A specifications

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