Polar Air SWC-12-EC-I Page 20 Installation, Operation & Service Manual Download

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Page 19

B.12.

LED Display and Error Descriptions

Power / Operation LED light (both green)

Unit on

Power LED Off, Operation LED On

Unit in standby

Power LED On, Operation LED Off

For all units - Green LED

Error Description

Blink

LED display

Reason

Remedy

Return air sensor
failure

Green LED blinks 1
times, stops for 3s

Room sensor
unplugged or
damaged.

1. Check if Tr plug is connected or not.

2. Check if sensor’s resistance is correct

or not.

Indoor coil sensor 1
failure

Green LED blinks 2
times, stops for 3s

Ti1 sensor
unplugged or
damaged.

1. Check if Ti1 plug is connected or not.

2. Check if sensor’s resistance is correct

or not.

Indoor coil sensor 2
failure

Green LED blinks 3
times, stops for 3s

Ti2 sensor
unplugged or
damaged.

1. Check if Ti2 plug is connected or not.

2. Check if sensor’s resistance is correct

or not.

Water pump failure

Green LED blinks 4
times, stops for 3s

Float switch is
opened.

1. Check if the condensate water pipe is
connected or not.

2. Check if the pump is functioning or
not.

Indoor coil low
temperature
protection

Green LED blinks 5
times, stops for 3s

Water temperature
is lower than 3

ºC.

Check the water temperature.

Indoor coil over heat
protection

Green LED blinks 6
times, stops for 3s

Water temperature
is higher than 70

ºC.

Check the water temperature

Filter Switch (S6
PCB)

Green LED blinks 7
times, stops for 3s

Filter switch is
opened.

1. Check if filter block or not

2. replace teh new filter

Electric Heater
failure

Green LED blinks 8
times, stops for 3s

nly for unit with

EH.

1. Change fan speed to high.

2019-IOM-SWC-V-EC-I-001

Summary of Contents for SWC-12-EC-I

Page 1: ...2019 IOM SWC V EC I 001 ...

Page 2: ...p Mode 14 B 4 Auto Fan Speed 14 B 5 Stepping Motor 14 B 6 Buzzer 15 B 7 Auto Restart 15 B 8 On Off Switch 15 B 9 Electric Heater Safety Switch 15 B 10 Low Temperature Protection of Indoor Coil in Winter 15 B 11 Open Modbus Protocol 16 B 12 LED Display and Error Descriptions 19 C Master Slave Network Setup 20 D User Interface 21 D 1 Remote Handset 21 D 2 Wall Pad 22 E Maintenance 25 E 1 Opening and...

Page 3: ...hould be performed by qualified service personnel only This appliance is not intended for use by persons including children with reduced physical sensory or mental capabilities or persons lacking in experience and knowledge of the appliance unless they have been given supervision or instruction concerning it User of this appliance is responsible for his her own safety Warranty shall be voided if i...

Page 4: ...ce and servicing is as shown above All dimensions shown in mm 5 The unit should be installed higher than eye level 6 Avoid installing the unit with direct sunlight 7 The signal receiver on the unit must be kept away from any high frequency emission source 8 Keep the unit away from fluorescent lamps which may affect the control system 9 Avoid electromagnetic control system interference ensure contr...

Page 5: ...Page 4 A 3 Mounting Plate Dimensions SWC 12 15 18 EC I SWC 24 EC I All dimensions shown in mm 2019 IOM SWC V EC I 001 ...

Page 6: ... of gradiometer Failed to follow this may cause water to drip indoors and create atypical noise 4 Fix the mounting plate by means of expansion screws or tapping screws A 5 Condensate Drainage Hole Drilling 1 Ensure that the hole for condensate drainage is correctly positioned The height should be lower than the bottom edge of the indoor unit 2 Drill a 65mm diameter hole with a descending slope 3 S...

Page 7: ...plate A 7 Drainage Piping Works 1 Install the drain hose so that it slopes downward slightly for free drainage Avoid installing it as shown in the below illustrations marked with an X 2 Put water in the drain pan and make sure that the water drains outdoors 3 If the flexible drain hose provided with the indoor unit is not long enough please extend it by joining it to an extension hose not provided...

Page 8: ...Page 7 A 8 Pipe Connections with Valve Pre assembly Complete Assembly Flexible hose Valve body with actuator Coil connector 2019 IOM SWC V EC I 001 ...

Page 9: ...oat Voltage free NC The contact is connected with float switch NC Electrical heater safety switch EH Voltage free NC The contact is connected with E heater Power input Phase L Power supply to the PCB Neutral N Power supply to the PCB Earth G Power supply to the PCB Voltage output Fan 1 CN4 Fan 1 driver Valve1 V1 On off valve Valve2 V2 On off valve Water pump WP Voltage output L Power supply to con...

Page 10: ...act ON unit in heating mode ON OFF Occupancy contact Float Float switch contact reserved CN1 2 Stepping motor CN3 Serial BUS contacts CN4 Ec motor DIS LED receiver display TTL wired wall pad TR 220Vac 24Vac transformer DA1 0 10Vdc signal for cooling modulaing valve DA2 0 10Vdc singal for heating modulating valve CPU AI3 AI2 AI1 CN2 prog EH DIS TTL1 Reset switch for SWC 20 24 30 CN3 ON OFF TERMINAL...

Page 11: ...0VDC When 12 Ti1 15ºC DA1 output is based on water temperature difference Ti1 Ti2 and Modbus parameter 300027 setting minus 3 PID calculation The output is minimum output Modbus300015 setting 10VDC When 15 Ti1 28ºC Modbus 300017 setting DA1 output is kept at 10VDC When Ti1 28ºC Modbus 300017 setting DA1 output is at minimum Modbus300016 setting and report pre heat alarm b If Tr Ts 1ºC Modbus 30003...

Page 12: ... runs at high speed If Ti1 70ºC then unit keep original state If the indoor coil temperature sensor is damaged or not connected the protection mode will be overridden and the unit will work according to the pre heat and post heat program DEHUMIDIFICATION MODE When unit is turned on in dehumidification mode a AUX1 is turned on Ts is 24 ºC b If Tr 25ºC for 30S then MTV1 will be on for 3 minutes and ...

Page 13: ...ting speed b When Tr Ts 1ºC Modbus 300033 setting AUX2 is turned off Fan runs at lowest speed When unit is turned off AUX2 is turned off Fan works at setting speed If Ti1 38 ºC fan is turned off after 2 minutes With Electrical Heater as booster Modbus300043 1 When unit is turned on in heating mode a When Tr Ts 1 ºC Modbus 300033 setting AUX2 is turned on Fan is turned on at setting speed then chec...

Page 14: ...turned on in heating mode a When Tr Ts 1 ºC Modbus 300033 setting MTV2 and AUX2 are turned on DA1 is at 10VDC for 2 minutes then check Ti1 If Ti1 28ºC Modbus 300017 setting fan is turned on at low speed DA1 is at 10VDC If 28ºC Ti1 28 Modbus 3000017 setting 4ºC fan is on at original state DA1 is at original state If Ti1 28 Modbus 3000017 setting 4ºC fan is on at setting speed DA1 output is based on...

Page 15: ... unit is on If PRO input is closed for 60S the unit is turned off If PRO input is opened for 60S the unit is turned on Other function can be set in Modbus B 3 Sleep Mode a The sleep mode can only be set when the unit is in cool mode or heat mode b If the sleep mode is activated in cool mode the indoor fan runs at auto speed and Ts will increase by 0 5ºC for every 30 minutes The Maximum increasing ...

Page 16: ...nd or EC motor RPM is lower than Modbus 300020 setting EH will be turned off immediately and report an error and fan speed is changed to high speed Once the contact is returned to the closed 180 seconds and EC motor RPM is more than 300020 setting reset the error and the heater will start again When the EH safety switch is opened 3 times within 60 minutes the heater is not allowed to start anymore...

Page 17: ...ion Address Type Remark MTV1 200000 R MTV2 200001 R AUX1 200002 R AUX2 200003 R Condensate pump 200004 R Electrical heater 200005 R Wired wall pad 200006 R PR O1 200007 R Float switch 200008 R Reserved 200009 R EH safety switch 200010 R Internal test 200011 R Testing purpose only Holding Register table Description Address Type Remark Mode setting 300000 R W Cooling mode 01 H Humidify mode 02 H Fan...

Page 18: ... default 2000 Reserved 300043 W 1 Reserved 300044 W 1 Reserved 300045 W 1 Software type 300046 R W 0 2 pipe MTV 1 2 pipe without valve 2 4 pipe std valve 3 4 pipe 6 way valve EH type 300047 R W 0 without EH 1 EH as booster 2 EH as primary DA1 control signal 300048 R W 0 Tr Ts 1 ESP EC motor input ports 3000049 R W 0 CN4 working Default 1 CN5 working 2 CN4 CN5 working PRO1 input type 300050 R W 0 N...

Page 19: ...s error Bit11 Anti frozen error Bit12 Ti3 temperature sensor error Bit13 Ti4 temperature sensor error Bit14 PM2 5 sensor Bit15 AQI Error Fan speed status 400006 R Low 04 H Medium 02 H High 01 H Reserved 400007 R Reserved 400008 R EH 400009 R 0 disable 1 booster 2 primary Unit type 400010 R DA1 400011 R DA2 400012 R Reserved 400013 R Reserved 400014 R Reserved 400015 R Reserved 400016 R Unit status...

Page 20: ...ops for 3s E3 Ti2 sensor unplugged or damaged 1 Check if Ti2 plug is connected or not 2 Check if sensor s resistance is correct or not Water pump failure Green LED blinks 4 times stops for 3s E4 Float switch is opened 1 Check if the condensate water pipe is connected or not 2 Check if the pump is functioning or not Indoor coil low temperature protection Green LED blinks 5 times stops for 3s E5 Wat...

Page 21: ...is correct or not PM2 5 sensor failure S6 PCB Green LED blinks 15 times stops for 3s E15 PM2 5 sensor unplugged or damaged 1 Check if PM2 5 plug is connected or not 2 Check if sensor s resistance is correct or not AQI sensor failure S6 PCB Green LED blinks 16 times stops for 3s E16 AQI sensor unplugged or damaged 1 Check if AQI plug is connected or not 2 Check if sensor s resistance is correct or ...

Page 22: ... the master unit its settings are automatically sent to the slave units Auto Cool Heat operation will be applicable in 4 pipe system only Louver function is available Swing function is not applicable European version only uses degree C setting Not available 2019 IOM SWC V EC I 001 ...

Page 23: ...ion Switch on or off the unit Switch between modes Modify parameters Modify parameters Change Fan Speed Lock Screen Press and at the same time for 5 seconds until displayed to lock the screen Press and for 5 seconds again until disappeared to unlock the screen Boot by Timer When power is off press for 5 seconds to enter Boot by Timer interface Range is from 0 to 720 minutes Time is increased by 30...

Page 24: ...fault 1 Parameter 6 PM2 5 Setting 30 200 default 60 Parameter 7 PM2 5 band setting 10 80 default 50 Parameter 8 CO2 setting 460 1200 default 800 Parameter 9 CO2 band setting 100 500 default 200 Parameter 10 Reserved Parameter 11 Reserved Parameter 12 RH setting 30 70 default 50 Parameter 13 RH band setting 10 30 default 10 Parameter 14 Unit address setting 0 31 default 0 Parameter 15 ESP setting 0...

Page 25: ...Page 24 Dimensions and Installation 1 Remove the screw on the bottom 2 Connect the communication plug to TTL1 terminal on PCB 3 Fix the mounting plate and the install the display 2019 IOM SWC V EC I 001 ...

Page 26: ...l the entire assembly out and up towards you E 3 Air Vent and Water Purge Valves 1 After connecting the water inlet and outlet pipes to the main supply lines turn on the main breaker and operate the unit in COOLING mode 2 Open the water inlet valve and flood the coil 3 Check all connections for water leakage If no leak is found open the purging valve with an open end wrench while supporting the un...

Page 27: ...Page 26 F Troubleshooting Guide 2019 IOM SWC V EC I 001 ...

Page 28: ...2019 IOM SWC V EC I 001 ...

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