Hubbell Electric Heater Company HE Benutzerhandbuch

 

 

13

Circuit breaker tripped at source.  Reset circuit breaker. 
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. 

No hot water 

Magnetic contactor does not 
energize. 

Replace complete magnetic 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. 

Faulty thermostat. 

Check thermostat adjustment. Monitor 
thermostat as described in Section III, 
Quarterly Inspection. Replace if 
necessary. 

Heating element not working on 
all phases 

Check to see that heating element is 
working on all phases, by checking the 
resistance (ohms) value for each 
element and comparing with the chart 
included in Section VI. 

Water temperature 
below settings at all 
times 

Heater improperly sized 

Verify heater is properly sized for the 
flow rate and temperature rise of your 
system. See formulas included in 
Section VI. Replace elements with 
proper size as necessary. 

Relief valve discharges 
continuously 

Excessive temperature or 
pressure in tank 

Temperature and pressure relief valves 
are made to operate if the water 
temperature exceeds 210

°F or water 

pressure exceeds the pressure rating of 
the safety relief valve. If trouble is 
excessive temperature, then thermostat is 
not shutting off at the right setting and 
thermostat must be replaced.