Haier HRG15 Installation Instructions Manual Download Page 16

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508270-01M

Page 16 of 21

Issue 2225

DS1 and DS2 System Status, Fault and Lockout Codes

DS2

Green

DS1

Red

Type

Condition / Code

Possible Cause(s)

Solution

OFF

Status

Power Problem

No power (24V) to control

board terminals R and C or

control board failure.

1. Check control transformer power (24V).
2. If power is available to control board and

LED(s) do not light, replace control board.

Simultaneous

SLOW Flash

Status

Normal operation

Unit operating normally or in

standby mode.

None required.

Alternating

SLOW Flash

Status

5-minute anti-short

cycle delay

Initial power up, safety trip, end

of room thermostat demand.

None required (jumper TEST pins to override)

Simultaneous

FAST Flash

Fault

Ambient Sensor

Problem

Sensor being detected open or shorted or out of temperature range. Control

board will revert to time/temperature defrost operation. (System will still heat or

cool).

Alternating

FAST Flash

Fault

Coil Sensor

Problem

Sensor being detected open or shorted or out of temperature range. Control

board will not perform demand or time/temperature defrost operation. (System

will still heat or cool.)

Fault

Demand Defrost

Control Failure

Indicates that demand defrost control has internal component failure. Cycle

24VAC power to control board. If code does not clear, replace control board.

OFF

SLOW

Flash

Fault

Low Pressure Fault

•

Restricted air flow over

indoor or outdoor coil.

• Improper refrigerant charge

in system.

• Improper metering device

installed or incorrect

operation of metering device.

• Incorrect or improper sensor

location or connection to

system.

• Remove any blockages or restrictions from

coils and/or fans. Check indoor and outdoor

fan motor for proper current draws.

• Check system charge using subcooling

method.

• Check system operating pressures and

compare to unit subcooling tables located on

unit access panel.

• Make sure all pressure switches and sensors

have secure connections to system to

prevent refrigerant leaks or errors in pressure

and temperature measurements.

OFF

Lockout

Low Pressure

Lockout

SLOW

Flash

OFF

Fault

High Pressure Fault

OFF

Lockout

High Pressure

Lockout

(Each fault adds 1 strike to that code’s counter; 5 strikes per code = LOCKOUT)

Table 6. Control Board Diagnostic LEDs

Summary of Contents for HRG15

Page 1: ...eaned with potable water several times per year to avoid corrosive buildup salt NOTICE This manual must be left with the homeowner for future reference This is a safety alert symbol and should never be ignored When you see this symbol on labels or in manuals be alert to the potential for personal injury or death Installation and servicing of air conditioning equipment can be hazardous due to inter...

Page 2: ...installed on a solid foundation This foundation should extend a minimum of 2 inches beyond the sides of the outdoor section To reduce the possibility of noise transmission the foundation slab General Read this entire instruction manual as well as the instructions supplied in separate equipment before starting the installation Observe and follow all warnings cautions instructional labels and tags F...

Page 3: ...48 Between units 24 Against wall 6 Maximum soffit overhang is 36 NOTE At least one side should be unobstructed by a wall or other barrier Table 2 Clearances 30 around Control Box 24 6 Figure 2 NOTE See Table 2 for specific minimum clearance guidelines DO LOCATE THE UNIT With proper clearances on sides and top of unit On a solid level foundation or pad unit must be level to within 1 4 in ft per com...

Page 4: ...8 042 3 8 3 8 7 8 7 8 048 3 8 3 8 7 8 7 8 060 3 8 3 8 1 1 8 1 1 8 Field supplied 7 8 x 1 1 8 connector required on both ends of vapor tubing Table 3 Recommended Liquid Vapor Tube Diameters in Be extra careful with sharp bends Tubing can kink very easily and if this occurs the entire tube length will have to be replaced Extra care at this time will eliminate future service problems It is recommende...

Page 5: ... UNIT VAPOR LINE SERVICE VALVE VAPOR LIQUID 1 A B C D A Cylinder with clean R 410A positioned to deliver liquid refrigerant to the vapor service valve B Refrigerant gauge set low side to the liquid line valve C Refrigerant gauge set center port to inlet on the recovery machine with an empty recovery tank connected to the gauge set D Connect recovery tank to recovery machine per machine instruction...

Page 6: ...l Shown Sensing bulb insulation is required if mounted external to the coil casing sensing bulb installation for bulb positioning STUB END TEFLON RING LIQUID LINE ASSEMBLY WITH BRASS NUT DISTRIBUTOR ASSEMBLY 3 Install one of the provided Teflon rings around the stubbed end of the check expansion valve and lightly lubricate the connector threads and expose surface of the Teflon ring with refrigeran...

Page 7: ...round Do not crimp end of the line Remove service cap and core from both the vapor and liquid line service ports 1 2 LIQUID LINE SERVICE VALVE SERVICE PORT CORE SERVICE PORT CAP SERVICE PORT CORE SERVICE PORT CAP CUT AND DEBUR LINE SET SIZE MATCHES SERVICE VALVE CONNECTION DO NOT CRIMP SERVICE VALVE CONNECTOR WHEN PIPE IS SMALLER THAN CONNECTION 3 VAPOR LINE SERVICE VALVE COPPER TUBE STUB REFRIGER...

Page 8: ...VES POINT FLAME AWAY FROM SERVICE VALVE PREPARATION FOR NEXT STEP 7 WRAP SERVICE VALVES To help protect service valve seals during brazing wrap water saturated cloths around service valve bodies and copper tube stubs Use additionalwater saturated cloths underneath the valve body to protect the base paint 4 FLOW NITROGEN Flow regulated nitrogen at 1 to 2 psig through the refrigeration gauge set int...

Page 9: ... of the manifold gauge set in order to pressurize the line set and the indoor unit E After a few minutes open one of the service valve ports and verify that the refrigerant added to the system earlier is measurable with a leak detector F After the line set has been connected to the indoor and outdoor units check the line set connections and indoor unit for leaks Use the following procedure to test...

Page 10: ...quid refrigerant Open the manifold gauge valve 1 to 2 psig in order to release the vacuum in the line set and indoor unit G Perform the following Close manifold gauge valves Shut off HFC 410A cylinder Reinstall service valve cores by removing manifold hose from service valve Quickly install cores with core tool while maintaining a positive system pressure Replace stem caps and finger tighten them ...

Page 11: ...t breaker may result in property damage Size wiring and circuit breaker s per Product Specifications and unit rating plate WARNING ELECTROSTATIC DISCHARGE ESD Precautions and Procedures Electrostaticdischargecanaffectelectroniccomponents Take care during unit installation and service to protect the unit s electronic controls Precautions will help to avoid control exposure to electrostatic discharg...

Page 12: ...example of control wiring connections when using a standard thermostat Any excess high voltage field wiring should be trimmed and secured away from any low voltage field wiring To facilitate a conduit a cutout is located in the bottom of the control panel Connect conduit to the control panel using a proper conduit fitting ROUTING HIGH VOLTAGE GROUND AND CONTROL WIRING WIRE RUN LENGTH AWG INSULATIO...

Page 13: ...ure auto reset trip at 25 psig reset at 40 5 Add refrigerant if subcooling is lower than table Recover refrigerant if subcooling is high 6 If ambient temp is lower than 60 F check charge in heating mode or weigh refrigerant according to name plate data Heating Mode Check charge in heating mode if ambient temp is below 60 F Indoor temp must be between 65 and 75 F Follow steps 1 to 6 above and compa...

Page 14: ...ult code Heating and cooling operation will be allowed in this fault condition NOTE The coil temperature probe is designed with a spring clip to allow mounting to the outside coil tubing Coil sensor location is important for proper defrost operation Ambient Sensor The ambient sensor considers outdoor temperatures below 35 F 37 C or above 120 F 48 C as a fault If the ambient sensor is detected as b...

Page 15: ... F 2 C the control board will initiate a defrost cycle Actuation When the reversing valve is de energized the Y1 circuit is energized and the coil temperature is below 35 F 2 C the board logs the compressor run time If the board is not calibrated a defrost cycle will be initiated after 30 minutes of heating mode compressor run time The control will attempt to self calibrate after this and all othe...

Page 16: ... not perform demand or time temperature defrost operation System will still heat or cool ON ON Fault Demand Defrost Control Failure Indicates that demand defrost control has internal component failure Cycle 24VAC power to control board If code does not clear replace control board OFF SLOW Flash Fault Low Pressure Fault Restricted air flow over indoor or outdoor coil Improper refrigerant charge in ...

Page 17: ...hen a jumper is installed on the DELAY pins the compressor will be cycled off for 30 seconds going in and out of the defrost mode Units are shipped with jumper installed on DELAY pins NOTE The 30 second off cycle is NOT functional when TEST pins on P1 are jumpered P6 TST PS DF C R O Y1 Y2 Factory Test Connectors No field use DS1 RED LED Diagnostic LED Control board LEDs may be OFF ON or FLASHING t...

Page 18: ... bent fins may affect unit operation SHARP OBJECT HAZARD Condenser coils have sharp edges Wear adequate body protection on body extremities e g gloves FAILURE TO FOLLOW THIS WARNING COULD RESULT IN BODILY INJURY WARNING Painted Surfaces For maximum protection of the unit s finish a good grade of automobile wax should be applied every year In geographical areas where water has a high concentration ...

Page 19: ... the defrost cycle In case of extended power outage If the outdoor temperature is below 50 F and power to your outdoor unit has been interrupted for one hour or longer observe the following when restoring power to your heat pump system Set the room thermostat selector to the Emergency Heat setting to obtain temporary heat for a minimum of 6 hours This will allow system refrigerant pressures and te...

Page 20: ...508270 01M Page 20 of 21 Issue 2225 Figure 7 Wiring Diagram 018 036 Models ...

Page 21: ...Page 21 of 21 508270 01M Issue 2225 Figure 8 Wiring Diagram 042 060 Models ...

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