Trebor Quantum Series Di Water Heater - Manual (Page 40)

PAGE 40 QUANTUM DI HEATER OPERATION / MAINTENANCE MANUAL
8 TROUBLESHOOTING
Display is Not Illuminated
Cause: Solution:
EMO button engaged. Twist EMO in direction of arrows (see Section 2.3).
No power at main circuit breaker. Review wiring procedure (see Section 3, Installation).
Control fuse is blown. Replace fuse.
Main breaker is OFF. Main breaker to ON.
Alarm Sounds
Cause: Solution:
DI supply pressure. Check water supply pressure at source.
Liquid level.
Check water supply at source.
Check overpressure relief diaphragm.
Verify flow is on.
Leak sensor.
Check manifold and heater modules for leak. Visually
inspect leak tray.
Thermocouple damaged.
If fault repeats, check thermocouple leads to OTC for
continuity. Check T/C plugs in top heater modules.
Plugged orifice in heater. Check fluid lines in and out of manifold for flow.
Over-temperature alarm.
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.
Check Heater Element Status Alert
Cause: Solution:
Failed heater.
Circuit breaker tripped.
Heater enable.
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.
Solid State Relay (SSR) may have
“frozen” open or closed.
An SSR has failed in the open mode: Shut system off
immediately and replace the failed SSR. SSR’s should be
replaced in pairs.