TMG TMG-HW28, Руководство по эксплуатации продукта

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BOILER SYSTEM DIAGNOSTICS
Water Output Temperature Too Low
PROBLEM POSSIBLE CAUSE SOLUTION
Burner firing normally but
with outlet temp lower
than rated
Thermostat set too low Set the thermostat to proper output temperature.
Burner firing constantly
Inlet water too cold
If inlet water is freezing to the touch, the boiler may not be
able to reach desired temperature increase. Use a water
supply with a higher temperature.
Sooting
Soot build up on the coil can keep the water from reaching
the desired If inlet water is freezing to the touch, the boiler
may not be able to reach the desired temperature increase.
Use a water supply
Scaling
The outlet fitting to the hose can get scale build-up and
reduce heat exchange. Descale and prevent further build-up.
BOILER SYSTEM DIAGNOSTICS - Boiler Controls
PROBLEM POSSIBLE CAUSE SOLUTION
No voltage solenoid Boiler control or electrical
problem
A multimeter can be used to check continuity through
controls and pinpoint the problem areas.
Solenoid coil doesnot
energize
Bad connection to solenoid coil Electrical connections to solenoid valve coil should be tight
and not corroded.
Coil bad
Check to see if fuel solenoid will energize when the proper
voltage is applied. Solenoid may need replacing.
Boiler control not activating
properly
If coil energizes when proper voltage is applied, check boiler
controls.
Solenoid coil energizes Problem occurring elsewhere
If solenoid valve coil energizes when the cleaner is operating
in hot water the problem is elsewhere. Check the air/fuel
delivery.
BOILER SYSTEM DIAGNOSTICS - Pressure Switch
PROBLEM POSSIBLE CAUSE SOLUTION
Switch activates when
pressure is reached but
boiler not firing
Control not flowing through
switch
A multimeter can indicate if the proper voltage flows through
the boiler side of the switch. If not the switch may not need
replaced.
Switch improperly wired Switch may be improperly wired for its function.
Switch bad
If wiring is proper and still no current flow when activated,
switch may need replacement.
Switch does not activate
Plunger fouled or stuck
Check pressure plunger to see if it will travel freely. If not, the
passage may need cleared.
Plunger not moving far enough
Check to see if the plunger is traveling far enough to depress
the microswitch. Adjust if
necessary.
Switch activated manually
Current not flowing through
switch
If switch activates manually but boiler does not fire, current
may not be flowing through. The
switch may need replacing.
Microswitch not properly
adjusted
Microswitch may need readjustment so plunger can trip in.
Switch bad Replace switch with another one.
Problem elsewhere in the system. If switch works manually and current is flowing properly, the
problem is elsewhere. Try other
boiler diagnostics.
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