Fault Codes - Hotpoint MWH424.1X Service Information

Indesit Company
SAFETY CHECKS AND TESTS AFTER SERVICING
Constructional Checks
If mechanical or electrical (electronic) parts have been replaced be sure to follow the following steps.
1.1 Check for correct wiring, adequate mechanical decrements of parts, and firm connectors.
1.2 Check for adequate grounding.
1.3 Check the following items before turning the oven ON.
1) Proper door closing, seal/choke surfaces, and hinges.
2) No outer case damage.
3) Proper interlock and monitor operations.
Insulation Resistance Test
If the low voltage power supply has been repaired, use a 500 V Mega ohmmeter to measure the
resistance between the primary (Line and Neutral) of the power plug and operator accessible metal
parts. The resistance should be no less than 2 Mega Ohms. Repair the oven again when necessary.

FAULT CODES

FAULT CODE DESCRIPTION
E-01 Sensor temperature is open circuit
E-04 Sensor temperature is short circuit
E-11 Button has been pressed more than 60s
Preheating fault, MWO didn't reach
E-17
preheating temperature within 15 min
Service Manual UK
POSSIBLE REASON
1. No Sensor Temperature
2. There is an open-circuit contact in the
circuit of the Sensor Temperature
1. There is a short-circuit in the circuit
Sensor Temperature of PCB Assy
2. The fan of convection stucked
1. When MWO works with the
microwave, it may be the microwave
leakage is out of limits.
2. When MWO works with no microwave,
it may be the short-circuit of PCB Assy.
3. Magnetic bead (5V power unit) BD1
has been broken (it may be broken
during the transport and assembly)
1. Heater didn't work
2. Relay didn't normally start
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