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8
TROUBLESHOOTING
Display is Not Illuminated
Cause:
EMO button engaged.
No power at main circuit breaker.
Control fuse is blown.
Main breaker is OFF.
Alarm Sounds
Cause:
DI supply pressure.
Liquid level.
Leak sensor.
Thermocouple damaged.
Plugged orifice in heater.
Over-temperature alarm.
Check Heater Element Status Alert
Cause:
Failed heater.
Circuit breaker tripped.
Heater enable.
Solid State Relay (SSR) may have
"frozen" open or closed.
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Solution:
Twist EMO in direction of arrows (see Section 2.3).
Review wiring procedure (see Section 3, Installation).
Replace fuse.
Main breaker to ON.
Solution:
Check water supply pressure at source.
Check water supply at source.
Check overpressure relief diaphragm.
Verify flow is on.
Check manifold and heater modules for leak. Visually
inspect leak tray.
If fault repeats, check thermocouple leads to OTC for
continuity. Check T/C plugs in top heater modules.
Check fluid lines in and out of manifold for flow.
Check if heater element has failed and replace module
(see section 7.1).
If fault reports, check T/C leads to OTC for continuity.
Verify fan operation.
Solution:
Check if heater element has failed and replace module
(see Section 7.1).
Check and reset the main, auxiliary and element isolation
circuit breakers.
Consult Trebor if circuit breaker repeatedly trips.
An SSR has failed in the open mode: Shut system off
immediately and replace the failed SSR. SSR's should be
replaced in pairs.
QUANTUM DI HEATER OPERATION / MAINTENANCE MANUAL
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