3M MP7750 Operation Guide - Page 36

Regarding the Indicator Lamps Lighting and flashing of the POWER indicator, the LAMP indicator, and the TEMP indicator have the meanings as described in the Table below. Please respond in accordance with the instructions within the Table. POWER LAMP TEMP indicator indicator indicator Description The orange lamp is lighted Turned OFF Turned OFF (Not lighted) (Not lighted) The STANDBY mode is set Flashing of the green lamp Turned OFF Turned OFF The unit is warming up. Please wait. The green lamp is lighted Turned OFF Turned OFF The unit is in an ON state. Ordinary operations may be performed. Flashing of the orange lamp Turned OFF Turned OFF The unit is cooling down. Please wait. Blinking of the - red lamp The unit is cooling down. Please wait. - A certain error has been detected. Wait until the POWER indicator lamp has finished flashing, and then perform the proper response measure using the item descriptions below as reference. The red lamp is lighted, or blinks The red lamp is lighted Turned OFF The lamp does not light. There is a possibility that the interior portion has become heated. Turn the power OFF and wait approximately 20 minutes. After the main unit has cooled down, please confirm whether or not there is blockage of the air passage aperture, whether or not the filter is dirty, and/or whether or not the peripheral temperature exceeds 35°C, etc. After performing any needed maintenance, turn the power ON again; if the same display is displayed, then please change the lamp. The red lamp is lighted, or blinks Blinking of the red lamp Turned OFF Either there is no lamp and/or lamp cover, or either of these has not been properly fixed (attached). Turn the power OFF and wait approximately 45 minutes. After the main unit has sufficiently cooled down, please make confirmation of the attachment state of the lamp and lamp cover. After performing any needed maintenance, turn the power ON again; if the same display is displayed, then please contact a sales store or a service company. The red lamp is lighted, or blinks Turned OFF Blinking of the red lamp The cooling fan is not operating. Turn the power OFF and wait approximately 20 minutes. After the main unit has cooled down, please make confirmation that no foreign matter has become caught in the fan, etc. After performing any needed maintenance, turn the power ON again; if the same display is displayed, then please contact a sales store or a service company. The red lamp is lighted, or blinks The green lamp is lighted There is a possibility that the interior portion has become heated. Turn the power OFF and wait approximately 20 minutes. After the main unit has cooled down, please confirm whether or not Turned The red lamp is there is blockage of the air passage aperture, whether or not the filter is dirty, and/or whether or OFF lighted not the peripheral temperature exceeds 35°C, etc. After performing any needed maintenance, turn the power ON again; if the same display is displayed, then please contact a sales store or a service company. There is a possibility that the interior portion has become overcooled. Please use the unit within Alternative blinking the usage temperature parameters (0°C to 35°C). After performing any needed maintenance, with the red lamp turn the power ON again; if the same display is displayed, then please contact a sales store or a service company. The green Simultaneous blinking lamp is lighted with the red lamp This is a notification that it is time to clean the filter. After cleaning the filter, operate the FILTER TIME portion of the OPTION Menu, and perform reset of the FILTER TIME. NOTE When the interior portion has become overheated, for safety purposes, the power source is automatically turned OFF, and the indicator lamps may also be turned OFF. Press the " " (power OFF) side of the main power switch, and wait for approximately 20 minutes. Please then use the unit only after having first confirmed that the unit has sufficiently cooled down. 36