Summary of Contents for Mitsubishi Electric Lossnay VL-100U5-E
July 2013 No. U190 LOSSNAY HANDBOOK Model : VL-100U VL-100EU Nameplate Repair work must be performed by the manufacturer, its service agent or a similarly qualified person in order to avoid hazards.
1. Safety precautions Read the following precautions thoroughly before the maintenance, and then inspect and repair the product in a safe manner. The types and levels of danger that may arise if the product is handled incorrectly are described with the warning symbols shown below.
2. Names and functions of components Lossnay Core Louver Filter stopper Front panel (Heat exchanger) Core handle Exhaust air filter Filter frame Shutter knob Outside air filter (Replacement filter) Power plug Pull cord (VL-100U -E only) (VL-100U -E only) About the filters Features Exhaust air Exhaust air filter...
6. Troubleshooting Work precautions • When servicing, be sure to recreate the malfunction two or three times before starting repairs. • When servicing, always keep proper footing. • When servicing, always unplug the power cord from the outlet, or turn off the circuit breaker. Sufficient care must be taken to avoid electric shock or injury.
Error Cause Action 3 An unusual Is there something wrong with the motor? Check the basic checklist for the major noise comes components (Table 3). from the fan. Replace the abnormal parts. 4 High/Low lamp Is Lossnay operating at the High or Low If the lamp does not illuminate during the does not illumi- fan speed?
7. How to call Symptom Remedy The incoming air feels cold. 1 Stop the operation, and close the shutter. 2 Adjust the louver in a horizontal position. 3 Change the fan speed to Low. Unusual noise occurs. 1 Clean the filters. (Noise became louder.) 2 Securely attach the front panel and filters.
9. Overhauling procedures Work precautions • Before replacing parts, follow the instructions described in the troubleshooting. • When servicing, always keep proper footing. • When servicing, always unplug the power cord from the outlet, or turn off the circuit breaker. Sufficient care must be taken to avoid electric shock or injury.
3 Unscrew the terminal block (TB) case cover clamping screw (one PT screw 4 × 8, indicated by ), and remove the TB case cover. TB case cover 4 Loosen the screws of the terminal block (three screws, indicated by ) with a screwdriver, and disconnect the power lead wires. (3) Main unit Main unit 1 Unscrew the main unit clamping screws (two black PTT screws...
(5) Lossnay core • Hold the core handle, and pull it out in the direction of the arrow while holding down the hook part. Hook part Core handle <Reassembly procedure> • When installing the Lossnay core, first fit the lower part of the core handle (indicated by “a”) into "b" position of the front casing, and then hook the ledge of the core handle to the concave portion of the front casing (indicated by ).
3 Remove the neon lamp from the front casing. 4 Pass the neon lamp through the hole of the front casing, and then remove the front casing. Neon lamp Hole of the front casing (7) Air exhaust (EA) fan 1 Remove the special nut (8) and tab washer, and then remove EA fan the EA fan.
(8) Air supply (SA) fan Motor fix plate 1 Unscrew the motor fix plate clamping screw (one PTT screw 4 × 14, indicated by ). 2 Turn the motor fix plate upside down, and put it on the main unit. SA fan 3 Remove the special nut (8) and tab washer, and then remove the SA fan.
(10) Terminal block case (TB case) 1 Unscrew the TB case clamping screw (one PT screw 4 × 8, indi- cated by ), and remove the TB case. TB case 2 Unscrew the TB fix plate clamping screws (two PTT screws 4 × 8, indicated by ), and remove the TB fix plate.
10. Parts catalog Please note the following when using the parts catalog. 1. When ordering parts, always indicate the part number, part name, and the number of parts required. 2. Parts are not always available, and it may take time for you to receive them. 3.