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Ovention Matchbox M1313, Устранение неисправностей и диагностика

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OVM_FT-0113

3

Oven Doesn’t Warm Up

Oven Doesn’t

Warm Up

Press reset button

on rear of oven

and wait 5 minutes

Repair

complete

Oven still doesn’t

warm up

Check fuses

Blown fuse found

Inspect wiring for

fraying or charring

No blown fuse

found

Check heater

current

No fraying or

charring observed

Fraying or charring

observed

Heater current OK

Heater current not

OK

Check heater

continuity

Assure

latest

firmware

is installed

Replace

damaged

components

Using a DVM

inspect heater

continuity

Heater continuity

OK

Heater continuity

not OK

Replace

Relay Board

Replace

Heater

Replace

Heater

Check

thermocouples

Thermocouple

readings OK

Thermocouple

readings not OK

Replace

Relay Board

Replace

Relay Board

Replace

Relay Board

Check

thermocouple

connections

Thermocouple

connections OK

Thermocouple

connections not

OK

Reseat

thermocouple

connections

Verify UI board to

relay board

communications

Replace

RJ45 cable

Connections

between UI board

and Relay board

OK

Check connections

between UI board

and Relay board

Connections

between UI board

and Relay board

not OK

UI board to relay

board

communications

OK

UI board to relay

board

communications

not OK

Heater continuity

OK

Heater continuity

not OK

Содержание Matchbox M1313

Страница 1: ... 2013 Ovention Inc Diagnostic Fault Tree P N 07 04 633 00 Matchbox Oven Models M1718 M1313 ...

Страница 2: ... tree Intermediate Event An event in the hierarchical fault tree that logically leads to the top level event but is at a lower level than the top event Basic Initiating Event An event in the hierarchical fault tree that is at the end of a branch in the tree It is the lowest level in a particular branch that is considered during the fault tree analysis The fault tree may have many branches each wit...

Страница 3: ... continuity OK Heater continuity not OK Replace Relay Board Replace Heater Replace Heater Check thermocouples Thermocouple readings OK Thermocouple readings not OK Replace Relay Board Replace Relay Board Replace Relay Board Check thermocouple connections Thermocouple connections OK Thermocouple connections not OK Reseat thermocouple connections Verify UI board to relay board communications Replace...

Страница 4: ...the RJ45 cable outside of door for 24 VDC Check 24 VDC on UI board inside of door 24 VDC found OK 24 VDC not found on UI board 24 VDC found on UI board No 24 VDC found Check input voltage wiring 10 A fuses Correct input voltage wiring or 10 A fuses as appropriate PTC 2 is good light is off PTC 2 is not good light is on Check that 24 VDC supply is good Check RJ45 cable for shorts or signs of pinchi...

Страница 5: ...ed Unresponsive screens problem resolved Replace screen Screen is cracked Screen is not cracked Remove oven door Check that touchscreen cable is properly seated in connector and not damaged Unresponsive screens problem persists Unresponsive screens problem persists Replace UI board Touchscreen cable is not properly seated in connector Touchscreen cable is properly seated in connector and is not da...

Страница 6: ...tire range in both directions checking for areas of binding or interference No binding or interference observed Binding or interference is observed Check that stepper motor connections are OK Assure food doesn t extend over cooking tray and isn t too high for door opening Food size and positioning is OK If food size or positioning is not OK correct this Check linear bushing and rolling bushing Lin...

Страница 7: ...s uncooked on top side or on bottom side or on both sides in this diagnostic flow Thermocouple readings OK Thermocouple connections OK Verify UI board to relay board communications Thermocouple connections notOK Thermocouple readings not OK Check Thermocouple connections Replace relay board Replace relay board Replace relay board Replace RJ45 cable Reseat thermocouple connections UI board to relay...

Страница 8: ...t of doors and cavity Slider is not at the end of travel Slider is at the end of travel Proceed to Slider Doesn t Complete Travel Or Doesn t Move At All diagnostic flow Check the alignment of the magnet on the slider to the proximity switch closest to it Proximity switch and magnet are aligned Proximity switch and magnet are not aligned Align proximity switch and magnet Disconnect the proximity sw...

Страница 9: ...ring as necessary Replace the 2 non working fans Replace the fan wiring Plug in fans Replace relay board Check relay board to fan wiring and repair or replace as needed Replace the non working fan Replace relay board Replace the cutoff switch that has continuity Relay board temperature is below 120 F Check continuity of both thermal cutoff switches AC not OK on relay board connector J1 AC OK on re...

Страница 10: ...the other blower motor No Neither blower motor has excessive vibration Yes One blower motor has excessive vibration Replace the faulty blower motor assembly Check for obstructions in the air paths and correct or remove obstruction Allow oven to cool and go to maintenance mode To isolate the source of the whistling turn on top blower to 100 and bottom blower to 0 listening for whistling sounds from...

Страница 11: ...itch for 10 seconds then turn back on Replace UI board Problem resolved Problem persists Oven Clock Doesn t Keep Correct Time Does oven not keep correct time only when oven power is cycled off and on Replace UI board Replace coin battery on UI board Oven doesn t keep correct time even if power is not cycled off and on Oven doesn t keep correct time when power is cycled off and on ...

Страница 12: ...rol panel that speaker volume is not turned off Replace speaker Replace relay board Problem resolved Still no audible beep at end of cook cycle Check on power up that a rev for the relay board is displayed Audible beep now occurs at end of cook cycle If rev is not 0 00 If rev is 0 00 refer to other symptoms as appropriate ...

Страница 13: ...ty switch and magnet are not aligned Proximity switch and magnet are aligned Disconnect the proximity switch via the inline connector near the switch Check for continuity at the switch when the slider magnet is next to switch Continuity OK Check for switch continuity measured at J4 J5 of relay board Replace switch and slider magnet No continuity Continuity OK Replace wire Replace relay board No co...

Страница 14: ...etpoint temperature Oven is not cooling to within 50 F of setpoint temperature Oven is slow to warm to within 50 F of setpoint temperature Check that top and bottom heaters are not reversed Check heater current Allow oven to cool Allow oven to warm Turn off main disconnect switch for10 seconds then turn back on Turn off main disconnect switch for 10 seconds then turn back on Oven is cooling to wit...

Страница 15: ...elay board Check wiring on relay board J11 for bottom blower or J24 for the top blower Check for less than 9 VDC on relay board pins 1 2 of J11 J24 Check whether the yellow light on the VFD is blinking or lit continuously Replace relay board Replace blower motor assembly Replace blower motor assembly Fix the connections Repair replace connections or wiring as appropriate Yellow light is blinking Y...

Страница 16: ...06 Hi Tech Commercial Service N Las Vegas 702 649 4616 NEW JERSEY Jay Hill Repair Fairfield 973 575 9145 Service Plus Flanders 973 691 6300 NEW YORK Acme American Repairs Inc Brooklyn 718 456 6544 Alpro Service Co Brooklyn 718 386 2515 Appliance Installation Buffalo 716 884 7425 Duffy s Equipment Services Inc Buffalo 800 836 1014 3Wire Northern Plattsburgh 800 634 5005 Duffy s Equipment Services I...

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