LG Electronics LMV1625W, LMV1625B service manual Thermostat

7-22

PROBLEM - C: Unit does not heat up even if display counts down when

START key is touched for "HIGH POWER" cooking.

1	Check: 1. PRIMARY AND SECONDARY INTERLOCK SWITCHES
	2 . THERMOSTAT

NO	Replace	Normal			Runs
continuity	circuit board	circuit board
Check the contact of		Poor contact	Correct	Normal	Runs
			seating	contact
relay 6(see page 7-18)
Contact	Check contact of
OK	connector S1
		Contact OK	Replace	Normal	Runs
			circuit board	circuit board

2

Measure resistance of H.V.Transformer (see page 7-15)

Resistance	Replace H.V.T.
		Normal H.V.T.
incorrect

Normal	Check the continuity of
resistance
	H.V.C. (see page 7-16)

	Replace H.V.C.	Normal H.V.C.
Resistance
incorrect

Normal	Check the	Abnormal	Replace H.V.D.	Normal
resistance	continuity of H.V.D.			H.V.D.
	(see page 7-16)

Normal	Replace	Normal
	Magnetron	Magnetron