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ACP MRX51 Series Service Manual
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Both MagnetronsBoth systems can be started andstopped by pressing the Start or StopiconThe current amperage being drawn by BOTH HVsystems. Look for consistent readings withConvection Heater. These are protected by Fuses F3& F4.Convection Heater Heater can be stopped and startedby pressing the Start Stop iconThe current amperage being drawn by theConvection Heater. 7-15 amps is considered normal.This circuit protected by fuse F5Radiant Heaters Not Used for this modelConvection Fan LowConvection Fan Motor Low Speedcan be stopped and started bypressing the Start or Stop icon.The current amperage being drawn by theConvection Fan Motor on low speed. <2 amps and fanmotor operating noise is considered normal. Thiscircuit is protected by fuse F2.Convection Fan HighConvection Fan Motor High Speedcan be stopped and started bypressing the Start or Stop icon.The current amperage being drawn by theConvection Fan Motor on high speed. <3 amps and ahigh speed fan motor operating noise is considerednormal.Cooling Fan Motors can be stopped and startedby pressing the Start Stop icon.The current amperage being drawn by both theCooling Fan Motors. 1-3 amps is considered normal.A failed Cooling Fan motor will likely result in a G2Error CodeAntenna MotorsBoth Antenna Motors can be startedby pressing the Start icon. NOTE:pressing Stop icon will not stop theantenna motors. They continue torun until Service Mode is exited.DOES NOT OPERATE ON MRX UNITS:Antenna Motors draw very low amperage. It isnormal to have 0 amps displayed. Service providershould visible inspect operation.RTDResistive Thermal Devices (aka TempSensors) Press and thecurrent temperature sensed by theRTD along with the maximumtemperature recorded.MRX OVENS ONLY HAVE ONE RTD AND MAXIMUMREADING IS NOT USED. NON USED READING WILL BE656 or 657– USE RADIANT RTD READING ONLY.The Radiant RTD is located at the back center of oven.The Convection RTD is located on the upper left bythe Convection Element. To reset maximumtemperature reading, press and hold the MaxConvection RTD for several seconds—temperaturewill change to the current temperature sensed.Memory Attached Memory DevicesPress and the following will display:USB Present or AbsentSD Card Present or AbsentError History Chronological List of ErrorsExperienced by the ControlPress and the following will display:Error Code Date, Time, and Code (see Error Code Listin this section)Voltage Switching Displays the voltage as sensed by thecontrol. Pressing has no effect.Temperature OffsetThe degree of offset programmedinto control to synchronize controlto cavity temperature.Press and the following will display: The amount oftemperature offset programmed by the factoryPin Code Displays the 4 Digit Pin Code Pressing has no effect.25 |
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