Mitsubishi Electronics PUHY-YMC Checking before getting test run, Test run method

Page 34

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12. Test run

12.1. Checking before getting test run

1

Check to see whether there are refrigerant leakage, and slack of power or transmission cable.

 

Confirm that 500 V megger shows 1.0 MΩ or more between power supply terminal block and ground. Do not operate in the case of 1.0 MΩ or less.

 

NOTE: Never carry out megohm check over terminal control board. Otherwise the control board would be broken.

2

Immediately after mounting the unit or after leaving it turned off for an extended length of time, the resistance of the insulation between the power

supply terminal board and the ground may decrease to approx. 1.0 MΩ as a result of refrigerant accumulating in the internal compressor.

 

 

If the insulation resistance is more than 1.0 MΩ , turning on the main power supply and energizing the crankcase heater for more than 12

 

hours will cause the refrigerant to evaporate, increasing the insulation resistance.

 

Check to see whether both gas and liquid valves are fully open.

3NOTE: Be sure to tighten caps.

Check the phase sequence and the voltage between phases.

4NOTE: If the phase sequence is reversed, an error (4103) may occur when a test run is made, causing the unit to stop. If a transmission booster is connected:

5Turn transmission booster power on the before turning the outdoor unit’s power on.

NOTE 1: If the outdoor unit’s power is turned on first, refrigerant system connection data may not be recognized normally.

NOTE 2: If the outdoor unit’s power is turned on first, reset the outdoor unit’s power after turning the transmission booster power on.

Turn on universal power supply at least 12 hours before getting test run in order to carry current to crank case heater. If current-carrying hours are too

6short, it may result in a malfunction of compressor.

12.2. Test run method

 

 

 

 

 

 

D

 

 

 

 

 

 

E

 

 

 

 

 

ON/OFF –

F

 

CENTRALLY CONTROLLED

1Hr.

 

G

A

 

CHECK

ON OFF

˚C

 

 

CLOCK

 

FILTER

H

 

 

 

 

 

˚C

 

 

CHECK MODE

 

 

 

 

I

STAND BY

INDOOR UNIT

ERROR CODE

NOT AVAILABLE

TEST RUN

 

 

DEFROST

 

ADDRESS NO

OAUNITADDRESSNO

 

 

CLOCKON OFF

 

 

 

 

FILTER

 

B

 

CHECK

J

 

 

 

 

 

TEMP.

TIMER SET

TEST RUN

 

REMOTE CONTROLLER

 

 

K

PAR-F25MA

 

 

 

C

 

 

L

A Display panel

G Indoor unit liquid pipe temperature indicator (see note 4)

B Control panel

H ON/OFF button 9

C Cooling/Heating select button 3, 4

I Test run indicator

D Check code indicator (see note 1)

J Wind adjust button 6

E Test run remaining time indicator (see note 3)

K Test run button 2

F ON/OFF LED (lights up in operation)

L Air blow adjust button 5

 

Operation procedure

Turn on universal power supply at least 12 hours before getting started →

displaying “HO” on display panel for about two minutes. The universal

1power supply must be left on for at least 12 hours (with the crank case heater turned on). If a transmission booster is connected, turn transmission booster power on the before turning the outdoor unit’s power on.

2Press [TEST RUN] button twice → displaying “TEST RUN” on display panel.

3

Press [Cooling/Heating] select button → make sure that air is blowing out.

4

Press [Cooling/Heating] select button to change from cooling to heating operation, and vice versa → make sure that warm or cold air is blowing out.

5Press [Wind] adjust button → make sure that air blow is changed.

6 Press [Up/Down Wind] or [Louver] button to change wind → Make sure that horizontal or downward blow is adjustable.

7→ Make sure that indoor unit fans operate normally.

8Make sure that interlocking devices such as ventilator operate normally if any.

9 Press [ON/OFF] button to cancel test run → Stop operation.

NOTE 1: If check code is displayed on remote controller or remote controller does not operate normally, see page 35 or further.

NOTE 2: Test run automatically stops operating after two hours by activation of timer set to two hours.

NOTE 3: During test run, test run remaining time is displayed on time display section.

NOTE 4: During test run, temperature of liquid pipe in indoor unit is displayed on remote controller room temp. display section.

NOTE 5: When pressing [Wind] adjust button, depending on the model, “This function is not available” may be displayed on remote controller. However, it is not a malfunction.

NOTE 6: If the outdoor temperature is low, the unit may not operate for up to 4 hours.

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Contents PUHY-YMC Contents Before installation and electric work Safety precautionsBefore getting installed Before getting installed moved electrical work Before starting the test runCombination with indoor units Confirmation of parts attachedModel Name Connecting pipe Elbow Shape Outdoor unit configurationSelection of installation site Variable capacity unit Constant capacity unitWhen there is an obstruction above the unit Individual installationWhen inlet air enters from right and left sides of unit Space required around unitCollective installation and continu- ous installation Lifting method and weight of productBe very careful to carry product Example of collective installation Installation of unitInstallation Location of anchor bolt60/61 dB A-weighted Connecting direction for refrigerant pipingDown piping and down wiring precautions Noise levelPUHY-400/500YMC Snow and seasonal windCountermeasure to seasonal wind PUHN-200/250YMCAreas of caution Refrigerant piping installationNever perform a pump down. This will damage the compressor Refrigerant piping system + αMultiple line/header Precautions concerning piping connection and valve operation For variable capacity unitGas side Liquid side Oil balance side Figure shows valve fully open100 to 1000 to Tightening angle standard Pipe diameter mm 50 to 57.5 / 500 to75 to 750 to 60 toOil balance pipe connection method Distributor gas connection method Part could be damaged if not cooled sufficientlyRestrictions on the posture for attaching joints How to install branch pipeJoint Gram belowAirtight test Airtight test and evacuationEvacuation No heat insulation must be provided for electric wires Thermal insulation of refrigerant pipingPenetrations Inner wall concealed Floor fireproofingElectrical work Variable capacity unit Control box and connecting posi- tion of wiringConstant capacity unit Hole For details, see item 11.3. Wiring transmission cablesPlate Transmission booster optionalWiring examples Wiring transmission cablesConnecting a transmission booster Name, code and possible unit connectionsOne remote control unit for each indoor unit Wiring method, address settingRemote control RC terminal block TB6 Within Address Unit Remote control operation Same as aboveFor details, see wire connection example C Unit Range Setting method Wiring LineSame group to the remote control RC terminal block TB6 Main remote controllerExtended length and the length to the most remote unit Booster RP WiringCapability Number of connected indoor units that can be Wiring of main power supply and equipment capacity Checking before getting test run Operation procedureTest run Test run methodHow to cope with test run abnormality AbnormalityDisplay at LED lighting blinking Remarks Flag Relay output 6603 Transmission error Transmission route Busy ErrorPower on Flag 8 always lightsCoping with remote controller abnormality Following phenomena do not represent abnormality emergency NMK Nknk NkokNKPK#$%&*+ Nkqk#$%&*+#,%&- ./0123145&6789#$%&=?@. !# Sknk Skok #$% +,-.ÜTK= UknkUkok Ukpk Ukqk Vkok NMK= Nmknk =NMKOK= $%&*+,-./01#$%&*+QMã NMKPK=L NMKQK= Ãã ! k·ãLâÖJÅã#$%&#*#%+, -. !*# NMKRK= NMKSK= #$%& *+& 012345678 .#$%&*+,-./0 1$%#234 NNK= NNKNK=NNKOK= NNKPK= Rsrv#$% +,-./012 NRO #$% +,-./0/12`kQN =EqRF= !# $%&*+ NNKQK= VwtNOKNK= NOKOK=NOKPK= EptNF EibaF NOKQK= Nokrk `ççäáåÖ EÉ~íáåÖNMK Nknk Nkqk #$%&!*+ Sknk Skok TK= Ukok Ukpk Ukqk Vkok NMK= NMKOK= #$%&*+QMã NMKPK=L NMKQK= #$%&#*#%+, -. !*# NMKRK= NMKSK= #$%& *+& 012345678 .#$%&*+,-./0 1$%#234 NNK= NNKOK= NNKPK= #$% +,-./012 NRO #$#%&* +,-./0123456 =EqRF= !# $%&*+ NNKQK= NOK= NOKPK= EptNF EibaF NOKQK= Nokrk WT02922X02
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