Fisher & Paykel Titan aerotech OD301MUS, Руководство по обслуживанию

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5. Fault Diagnostics
5.1 SYMPTOM: Oven electrical components are unresponsive
POSSIBLE CAUSES:
·
Blown fuse
· Faulty supply wiring or connections
·
Faulty power transformer
·
Tripped microtemp limiter
·
Faulty power module
PROCEDURE
Check the circuit breaker or fuse at the switchboard (replace fuse if blown).
Test for correct supply voltage to transformers on main terminal block.
(120 volts in USA or 240 volts in NZ / AUS)
(Check wiring continuity back to switchboard if voltage not present).
Check power transformer by testing for 12
VAC
on 2 way connector into power module.
(Refer to Technical Overview Section 2.24. Replace if no 12
VAC
)
Check for tripped microtemp limiter (Replace if tripped. Check the other thermal limiters
and trace the likely cause also) (Refer to Section 5.24)
Check for blown power module fuse by testing for 12
VDC
between pins 1 and 6 of the 12
way clock connector on the power module.
If no 12
VAC
then fuse has blown. (Refer to Technical Overview Section 2.24. Replace
power module if fuse has blown (refer to Servicing Instructions Section 7.9).
To trace cause of power module fuse blowing, refer below.
Tracing cause of power module fuse blowing:
Check resistance to earth of lamp wiring. (Replace lamp assembly if short circuit. Refer
to Servicing Instructions Section 7.14).
Check power transformer by testing for 12
VAC
on 2 way connector into power module.
(Replace transformer if more than 12
VAC
).