Symptom: Faulty Temperature Or Oven Mode L.c.d. Modules; Symptom: "Doorlock" And "Probe" Showing For Lower Cavity (Double Oven Only) - Fisher & Paykel Titan Aerotech OD302US Service Manual

Service Manual 546596A: 302 Series Titan Oven
5.5 SYMPTOM: Faulty Temperature or Oven Mode L.C.D.
Modules
POSSIBLE CAUSES:
Loose connection to the clock module
Faulty temperature or oven mode L.C.D. module
DIAGNOSIS:
If the fault is that one segment of the display is always on or always off, replace the
L.C.D. Module. (refer to Servicing Instructions Section 7.7)
If the L.C.D. module is displaying incorrect information, check the connections from
the L.C.D. module to the clock and switch modules. If there are no connection faults,
replace the L.C.D. module.
Replace the switch module if no other faulty components can be found. (refer to
Servicing Instructions Section 7.6)
5.6 SYMPTOM: "DOORLOCK" and "PROBE" showing for
lower cavity (double oven only)
POSSIBLE CAUSES:
Lower cavity power module has no power
DIAGNOSIS:
Check the connection between upper and lower cavity power modules.
Test for the correct supply voltage to the lower cavity power transformer.
120volts in USA or 230/240 volts in NZ / AUS / EU
Check the connection from the power transformer to the lower cavity power module.
Check for a blown power module fuse by testing for 12
the 12-way clock connector on the power module. (refer to Technical Overview
Section 2.25)
If there is no 12
Servicing Instructions Section 7.9)
Tracing the cause of a blown power module fuse:
Check the resistance to earth of the lamp wiring and replace if there is a short circuit.
(refer to Servicing Instructions Section 7.14)
Check the power transformer by testing for 12
power module. Replace the transformer if the voltage exceeds 12
then the fuse has blown. Replace the power module. (refer to
VAC
33
between pins 1 and 6 of
VDC
on the 2-way connector into the
VAC
VAC
June 2005
.