Maytag MGDB765FW W10240504 - Page 17

FOR SERVICE TECHNICIAN'S USE ONLY Dryer does not heat: Locate the components using figures 10a and 10b. ELECTRIC DRYER ONLY: 3 Quick Check: Perform steps under "Service Test Mode", page 6, to test for L1 and L2 line voltage. • If L1 is present, the thermal cutoff is functional. • If L2 is present, the centrifugal switch, high limit thermostat, and the side of the heater connected to heater relay 1 are functional. 1. Unplug dryer or disconnect power. 2. Remove the toe panel to access thermal components. 3. Check Heater-use an ohmmeter to measure the resistance between the red wire terminal and the black wire terminal on the heater.  If the resistance is approximately 10 Ω, go to step 5.  If an open circuit is detected, go to step 4. High Limit Thermostat Assembly Thermal Cut-Off Heater Element Thermal Fuse Outlet Thermistor Electric Dryer Figure 10a - Thermal components, electric dryer, viewed from front. High Limit Thermostat Thermal Cut-Off Flame Sensor Thermal Fuse Outlet Thermistor Gas Dryer Figure 10b - Thermal components, gas dryer, viewed from front. 4. Visually check the wire connections at the ACU on the K2 relay. If the connections look good, check for continuity across the heater (red wire to black wire). Refer to strip circuit on page 23.  Replace the heater if it is electrically open. 5. Check Thermal Cut-off-using an ohmmeter and referring to the wiring diagram, measure continuity from the red wire terminal at the thermal cut-off to the red wire terminal at the heater.  If there is continuity, go to step 7.  If an open circuit is detected, go to step 6. 6. Visually check the wire connections at the ACU on the K2 relay and wire connections between the heater and thermal cut-off, and make sure that terminals are correctly inserted in the connectors and are not loose. If the connections look good, check for continuity across the thermal cut-off again.  Replace the thermal cut-off if it is electrically open. 7. Check High Limit Thermostat-visually check the wire connections from the heater and centrifugal switch to the high limit thermostat. If the connections look good, check for continuity across the high limit thermostat.  Replace the high limit thermostat if it is electrically open. DO NOT REMOVE OR DESTROY PAGE 17