Summary of Contents for Mitsubishi Electric Lossnay VL-220CZGV-EB
April 2016 No. U209 LOSSNAY HANDBOOK MODELS Nameplate VL-220CZGV-E VL-220CZGV-EB Remote controller (Optional) PZ-61DR-E PZ-43SMF-E Filter (Optional) P-220SHF-E P-220EMF-E P-220F-E Warning: 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.
The noise is measured at 1.5 m under the center of the unit in an anechoic chamber. • Temperature exchange efficiency (%) is based on winter condition. • Mitsubishi Electric measures figures in the chart according to Japan Industrial Standard (JIS B 8628), therefore the characteristic curves are measured by chamber method.
3. Names and functions of components Exhaust air ﬁ lter case Exhaust air ﬁ lter Exhaust air ﬁ lter ﬁ xing knob It holds the exhaust air It prevents Lossnay core Release it to remove the ﬁ lter or medium efﬁ ciency from clogging.
4. Outside dimensions VL-220CZGV-E Drain outlet Lossnay unit Air duct switching damper (Optional) Ceiling suspension Duct connecting Duct connecting (supply (return air) air) (exhaust (outside air) air) Duct connecting Duct connecting Drain pan Working space (required space around Lossnay unit) Leave at least 700 mm of space Circuit...
VL-220CZGV-EB Drain outlet Lossnay unit Air duct switching damper (Optional) Ceiling suspension Duct connecting Duct connecting (supply (return air) air) (exhaust (outside air) air) Duct connecting Duct connecting Insulation Drain pan Working space (required space around Lossnay unit) Leave at least 700 mm of space Circuit Leave at least...
PZ-61DR-E Unit (mm) PZ-43SMF-E Unit (mm) P-220SHF-E, P-220EMF-E, P-220F-E Dimension The number of Model Applicable model filters per set P-220SHF-E VL-220CZGV-E P-220EMF-E VL-220CZGV-EB P-220F-E Note: • Lossnay unit is provided with one set of the ﬁ lters. Unit (mm) ─ 8 ─...
5. Electrical wiring diagram VL-220CZGV-E, VL-220CZGV-EB * TM1, TM4 shown in dotted lines are ﬁ eld work. * CN7 (DAMPER) is optional. * Be sure to connect the earth wire. * A power supply isolator must be installed. * Always use an isolator for the main switch power connection. * Select proper circuit breaker according to the electrical current information in the chart below.
6. Circuit board diagrams Circuit board diagram and check points ( 1 ) Control circuit board Malfunction monitor output Bypass monitor output Remote controller (Between 8 and 0) Pre-heater output power supply indicator (Between 7 and 0) (LED3 Green) Error: 0 Normal: During bypass mode: 0 Fed with power: lit...
( 2 ) Power circuit board Caution: The power circuit board is not insulated from the power line (high voltage part), except for the connection part (CN118 and CN119) with the control circuit board. Also, even when the power supply is cut off, the capacitor is charged.
7. Troubleshooting Work precautions • When removing or touching the cables, circuit board or other parts, make sure to turn off the power supply isolator. • Even after the power supply isolator is turned off, the capacitor on the circuit board retains high voltage for a while.
Lossnay does not work after installation (1) Failure mode 1: Lossnay does not work, or is completed. Lossnay works abnormally. Lossnay does not work in the trial op- eration after installation is completed, or Lossnay works abnormally during use. The remote controller does not work (2) Failure mode 2: The remote controller does not after installation is completed.
2 Transmission cables (remote controller transmission cable, and external input/output signal cable) Check Item Corrective action 1 Are the designated cables used for the remote control- Use the designated transmission cables. ler transmission cable? (See Table 2-1.) 2 Are the designated cables used for the external input/ Use the designated cables.
Table 2-2 External input/output specifications Terminal or Signal Total Function Name connector on Materials Used specifications extension the circuit board External control input Level/pulse Single-lead 0.8 to 1.2 mm dia. or 500 m TM2 1 3 (volt-free contact) (Note 1) twisted lead 0.5 to 1.5 mm External control input Level/pulse...
3 Monitor output signal cable Check Item Corrective action 1 Is the signal cable wired by multicore cable? Wire the cable using a 2-core cable. 2 Are the signal cables and transmission cables wired Wire the signal cables away from the transmission in the same piping duct? cables.
5 LED Indications on the circuit board Contents Check Item Corrective action LED1 Lossnay main unit Blinking: Starting up, or error oc- See Failure Mode 5. (green) error indicator curred Lit: During delay operation Lossnay operates after the delay time has passed.
Individual function check items If Lossnay does not work in the trial operation after installation is completed, or if Lossnay works abnormally during use, check the following items. Problem Factor Corrective action 1 The fan does not The connectors between the fan Check the connector (CN9) for the exhaust fan operate even motor and circuit board is discon-...
Problem Factor Corrective action 4 Even though the The indoor negative pressure Check the function selection switches (SW2- remote controller is setting or the indoor positive pres- 4 and 2-5) on the circuit board or the function operated to change sure setting is set.
Problem Factor Corrective action 8 The ventilation Temperature condition for Heat Check the temperature map. mode cannot be recovery mode or Bypass mode is For details, see the Lossnay installation manual. switched when not satisfied. Lossnay is operat- Temperature condition is not set Set the lower limit to temperatures lower than ing in the automatic correctly.
(2) Failure mode 2: The remote controller does not work. If the remote controller does not work after installation is completed, check the following items. 1 PZ-61DR-E Problem Factor Corrective action 1 Nothing is displayed The power of the Lossnay unit is Check the items described in (1) 1.
(3) Failure mode 3: Operations on the remote controller are disabled. Initial Check Items If the system cannot be operated with the remote controller after installation is completed, check the following items. Check item Notes 1 Are the function selection switches Depending on the settings of the function selection switches, (SW2 and SW5) on the Lossnay Lossnay may automatically operate or stop, or specific operation...
2 Interlocking with external devices Problem Factor Corrective action 1 Lossnay interlock The power of the Lossnay unit is Check the items described in (1) 1. settings cannot be not ON. performed with the Faulty connection of the remote Check the items described in (1) 2. remote controller.
(4) Failure mode 4: Lossnay does not work properly. Initial Check Items If Lossnay does not work properly after installation is completed, check the following items. Check item Notes 1 Are the function selection switches Depending on the settings of the function selection switches, (SW2 and SW5) on the Lossnay Lossnay may automatically operate or stop, or specific operation circuit board set correctly to suit the...
(5) Failure mode 5: Error code and LED display An error code displayed on the remote controller (PZ-61DR-E or PZ-43SMF-E) and blinking or illumination of LED1 (green) on the circuit board show the type of an error. The LED blink interval is 0.25 seconds for both on and off. The display duration is approximately 7 seconds. 0.25 s 0.25 s 0.25 s Error display example: Two blinks Error display list...
Error LED1 Symptom Cause Corrective action Code (green) 5101 Outdoor air Faulty connection of the thermis- Check the connector (CN22) connection. blinks (OA) ther- tor connector (CN22) on the control mistor re- circuit board lated error Thermistor failure Disconnect the connector (CN22), and check the resistance of the thermistor.
(6) Failure mode 6: Water leaks from the Lossnay unit. Problem Factor Corrective action 1 Water leaks from Is the drain pipe tilted downward Tilt the drain pipe at an angle of 1° or more. the Lossnay unit. at an angle of 1° or more? Is the drain hose securely con- Connect the drain hose securely.
(7) Temperatures and thermistor resistance table Temperature Resistance Temperature Resistance Temperature Resistance Temperature Resistance Temperature Resistance (°C) value (kΩ) (°C) value (kΩ) (°C) value (kΩ) (°C) value (kΩ) (°C) value (kΩ) 53.9 to ∞ 18.0 17.2 32.8 16.5 31.2 15.7 29.8 15.1 28.4...
8. Before receiving repair requests Frequently asked question Response Lossnay does not operate. 1 If the breaker on the distribution board is turned off, turn it on. 2 If the ON/OFF button on the remote controller is set to OFF, set it to ON. It takes one to four minutes for the remote controller to be fed with power after turning the Lossnay unit ON.
10. Overhauling procedures Work precautions • Before replacing parts, repair troubled sections according to the instructions described in the troubleshooting. • When servicing, always keep proper footing. • When servicing, always turn off the power supply isolator. Pay sufficient attention to avoid electrical shock or injury.
( 1 ) Turn off the power 1 Shut down the unit. 2 Turn off the power supply isolator. (2) Remove the filter assemblies Filter assembly (RA) 1 Turn the fixing knobs (three locations at the OA side, indicated by ) to remove the filter assembly (OA). 2 Turn the fixing knobs (two locations at the RA side, indi- cated by ) to remove the filter assembly (RA).
4 Unscrew the screws (two PTT screws 4×25) and wash- ers (two special washers 4.2), indicated by , and then pull out the drain pan in the direction of the arrow. Precaution Drain water may be generated inside the drain pan. Therefore, when removing the drain pan, be careful not to let drain water spill.
( 5 ) Remove the SA fan assembly SA motor lead Lead wire clip 1 Unfasten the motor leads from the lead wire clip. Assembly precaution Run the EA motor lead through guides A (four loca- tions, indicated by ), and the EA and SA motor leads through guide B (indicated by ).
2 Unscrew the screws (four PTT screws 4×25, indicated by ), and remove the motor (DC). Assembly precaution • Different types of motors (for SA fan and EA fan) are provided for this product. When installing the motors, be careful not to confuse between them. •...
Assembly precaution (1) for installing the Lossnay core Match the long edge corner of the Lossnay core with the groove at the center of the side frame. Lossnay core Long edge corner Side frame Groove Assembly precaution (2) for installing the Lossnay core Insert the Lossnay core into the main unit while pressing it hard against the side frame, and make sure that the edge corner of the Lossnay core is securely inserted into the convex parts of the fan casing (two loca- tions, indicated by ).
( 9 ) Remove the motor (DC) from the EA fan assembly 1 Remove the nut (special nut (M8)) that fixes the centrifu- gal fan to the motor shaft, and remove the spring wash- er, centrifugal fan, and special washer. →...
( 11 ) Remove the terminal block Power circuit board LED 4 1 Check that LED4 (red) on the control circuit board is OFF. 2 Disconnect the connectors (TAB1 and TAB2, indicated by ) from the power circuit board. Control circuit board 3 Unscrew the screw (one PT screw 4×8 BS, indicated by Terminal block ), and remove the lock washer and earth wire.
5 Disconnect the connectors (indicated by ) from the power circuit board. 6 Unscrew the screw (one PT screw 4×8 BS, indicated by ), and remove the lock washer and earth wire. 7 Unscrew the screw (one PT screw 4×8, indicated by ), and remove the power circuit board.
11. 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. It may take time for you to receive the parts. Make an inquiry about a rush order. 3.