Turbochef-technologies TurboChef User Manual Page 61
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ISSUE RESOLUTION
F8: Heat Low
Oven Not Warming Up
1. Check that the blower motor is moving air.
Blower motor is not moving air: Check blower motor assembly
and verify motor is stalled. Unplug oven and correct obstruction or
replace motor. (For access to motor shaft, remove top panel.)
Blower motor is moving air: Verify high-limit thermostat is
not tripped. See the high-limit thermostat information below.
High-Limit Thermostat:
Thermostat tripped: Reset and determine why the thermostat
tripped (See Figure 38, Item 114). Look for excess build up of
grease inside the oven or any other source for a fire.
Thermostat is not tripped: Check main convection heater.
1. Convection heater is defective: Unplug oven and replace the
convection heater and verify the K4 SSR (Figure 37) is not
shorted across output.
2. Convection heater OK: Check the K4 SSR.
K4 defective: Unplug oven and replace.
K4 OK: Unplug oven and verify all wiring. Verify P1 voltage on
I/O board is 5.0VDC (+/- 0.02) - see Figure 40, page 54.
F2: Cook Temperature
Low
1. Verify Cook Door Operation.
“Cook Door Open” Message: Verify which switch is not actuating
and readjust. See pages 38-43.
Cook Door OK: Verify high-limit thermostat is not tripped. See
the high-limit thermostat below.
High-Limit Thermostat:
Thermostat tripped: Reset and determine why the thermostat
tripped (See Figure 38, Item 114). Look for excess build up of
grease inside the oven or any other source for a fire.
Thermostat is not tripped: Check main convection heater.
1. Convection heater is defective: Unplug oven and replace the
convection heater and verify the K4 SSR (Figure 37) is not
shorted across output.
2. Convection heater OK: Check the K4 SSR.
K4 defective: Unplug oven and replace.
K4 OK: Unplug oven and verify all wiring. Verify P1 voltage on
I/O board is 5.0VDC (+/- 0.02) - see Figure 40, page 54.
CONVECTION CIRCUIT TROUBLESHOOTING
THE CONVECTION CIRCUIT
49
- TurboChef Service Manual 1
- For further information call: 2
- +1 214.379.6000 2
- NEVER attempt to 3
- Table of Contents 4
- IMPORTANT SAFETY INSTRUCTIONS 7
- GENERAL SAFETY INFORMATION 7
- REDUCING FIRE RISK 7
- EXCESSIVE MICROWAVE ENERGY 8
- GROUNDING INSTRUCTIONS 8
- POWER CORD REPLACEMENT 8
- 1 year parts and labor 10
- VAC, 60 Hz, 1 phase 10
- 4” (102 mm) adjustable legs 10
- 304 stainless steel line 10
- POWER INPUT 11
- TURBO / +1 214.379.6000 13
- 1 2 3 4 5 14
- Theory of Operation 15
- THEORY OF OPERATION 16
- CONTROL SYSTEM 16
- MICROWAVE SYSTEM 16
- CONVECTION SYSTEM 16
- BOTTOM IR AND CCV 16
- Fault Codes 19
- TO VIEW FAULT CODES 20
- FAULT CODE DEFINITIONS 20
- FAULT CODES 21
- The Control System 22
- CONTROL 23
- TEST MODE 24
- TEST FUNCTION OPTIONS 25
- W) status indicator is not 26
- DIAGNOSTIC MODE 26
- (CCSP) 26
- THE CONTROL SYSTEM 27
- FIGURE 15: Done Screen 28
- CONTROL SYSTEM PANEL PARTS 30
- ISSUE RESOLUTION 31
- 800.90TURBO 33
- The Microwave System 34
- MONITOR CIRCUIT DESCRIPTION 35
- MICROWAVE SYSTEM PARTS 36
- THE MICROWAVE SYSTEM 37
- MICROWAVE SYSTEM COMPONENTS 38
- WAVE GUIDE COVER REPLACEMENT 39
- WAVE GUIDE REPLACEMENT 40
- REPLACEMENT 40
- FIGURE 24: High Voltage Diode 42
- FIGURE 25: Magnetron 42
- The Oven Door 47
- OVEN DOOR PARTS 48
- ADJUSTING THE OVEN DOOR 49
- ADJUSTMENTS AND PARTS 50
- MONITOR SAFETY SWITCH PARTS 51
- = 0.020” 51
- Old Switch Setup 52
- New Switch Setup 53
- FIGURE 35: Oven Door Assembly 55
- PART TORQUE 56
- SCREW TORQUE CHART 56
- The Convection Circuit 58
- CONVECTION CIRCUIT COMPONENTS 59
- THE CONVECTION CIRCUIT 60
- IR Element and Catalytic 63
- Converter 63
- COMPONENTS 64
- Schematics and Schematic 66
- Components 66
- SCHEMATIC PARTS 67
- TEST POINT LOCATIONS 67
- I/O BOARD SCHEMATIC 68
- 41: NGC (Tornado) Schematic 69
- NGC (UK) SCHEMATIC 70
- 43: NGCEW (Tornado) Schematic 71
- 44: NGCED (Tornado) Schematic 72
- NGC (BRAZIL) SCHEMATIC 73
- Service Parts and 74
- Illustrations 74
- FILAMENT AND 79
- HIGH VOLTAGE 79
- TERMINALS 79
- APPLY HI-TEMP 81
- GREASE TO AREA 81
- FIGURE 35: OVEN DOOR ASSEMBLY 83
- TURBO or +1 214-379-6000 85
- Comprehensive Part List 89
- ITEM DESCRIPTION 90
- +1 214-379-6000 94
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