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First Issued April 2014

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Rheem Australia Pty Ltd

ABN 21 098 823 511

Solahart Everhot RheemPlus Rheem

325HAV 251325

554325

451325

251410

554410

551325

551410

SERVICE INSTRUCTIONS

325 & 410 Series II Heat Pump

TM077

Revision: 00

Issued: April 2014

Содержание 325 II Series

Страница 1: ...lly by Service All printed copies are deemed uncontrolled Rheem Australia Pty Ltd ABN 21 098 823 511 Solahart Everhot RheemPlus Rheem 325HAV 251325 554325 451325 251410 554410 551325 551410 SERVICE IN...

Страница 2: ...EIR FUNCTION 9 CONTROLLER 11 Power and Tank Sensor Connections 11 Sensors 11 Reset Button 12 OPERATION 13 Refrigerant High Pressure Switch 17 LED STATUS CODES 18 OPERATIONAL SEQUENCES 20 System Start...

Страница 3: ...observe the recommended procedure General warning symbol Observe the instructions accompanying the symbol Live testing to be conducted Personal Protective Clothing PPE shall be worn to reduce the ris...

Страница 4: ...attached Model number serial number and date of manufacture should be quoted in all correspondence Rheem Everhot Model Identification 5 5 1 325 07 2 Everhot 4 Rheem Optima 5 Rheem 5 Integrated 6 Split...

Страница 5: ...s B Heat Pump Module B AQ9290000 HEAT PUMP WATER HEATER MODELS The 325 410 Series II Heat Pump consists of a storage tank and a heat pump module which combine to make up the complete heat pump water h...

Страница 6: ...et Water Pressure kPa With ECV 680 680 680 650 Without ECV 800 800 800 850 Water Connections Inlet Outlet Rp 20mm Rp 20mm Rp 20mm Rp 20mm Heat Pump Rp 15mm Rp 15mm Rp 15mm Rp 15mm T PR Rp 15mm Rp 15mm...

Страница 7: ...sure 2930kPa 103kPa 2241kPa 207kPa Compressor Capacitor 25 F 10 5 370 440V AC 50 60Hz Compressor Current Draw 3 3A Compressor Internal Overload Setting Automatic Reset Cut Out Cut In 150 C 90 C Compre...

Страница 8: ...or excess noise from the compressor fan and circulator Check the refrigerant charge by inspecting the sight glass Visually check the unit for any potential problems Confirm correct heat pump module op...

Страница 9: ...ated Vapour A vapour gas at a temperature above its saturation point at a given pressure COMPONENTS AND THEIR FUNCTION Anode Sacrificial A metal alloy electrode installed in the water heater cylinder...

Страница 10: ...ch changes resistance with a change in temperature also known as a thermistor Sensors are used to measure temperature and feed the information back to a control system Sight Glass A component fitted i...

Страница 11: ...Four independent temperature sensors thermistors are utilised in the heat pump module The sensors are identified as follows Tank sensor Evaporator sensor Compressor sensor Heat exchanger water outlet...

Страница 12: ...peration To reset the system press and hold the reset button until both LEDs come on approximately 2 seconds After both LEDs come on release the reset button If the reset button is held down for longe...

Страница 13: ...main components of the sealed refrigeration system are the compressor condenser heat exchanger thermostatic expansion TX valve and the evaporator Refrigerant enters the compressor as a low pressure s...

Страница 14: ...ump s operating limits or a fault is detected the system may switch to Element Mode at any stage during Heat Pump Heating see the Element Mode section on page 15 Heat Pump Mode consists of three stage...

Страница 15: ...econds Heat Pump Heating During Heat Pump Heating the green LED will display 3 flashes The compressor and fan continue to operate and the circulator runs at full speed The system can not go from Heat...

Страница 16: ...temperature greater than 60 C that persists for more than 90 minutes Fault 4 Tank Sensor Fault The tank sensor has failed Fault 5 Evaporator Sensor Fault The evaporator sensor has failed Fault 6 Comp...

Страница 17: ...e of Fault 9 The Freeze Protection function may be required whilst heating is disabled refer to the Freeze Protection section on page 17 FREEZE PROTECTION Whilst the Freeze Protection function is acti...

Страница 18: ...mode the red LED displays a fault condition Refer to the LED Status Code Tables on page 19 for the LED flash sequences and a description of the condition In addition to displaying the current operati...

Страница 19: ...ement Heating Ambient Mode Fault Codes Fault Green LED Red LED Condition See the Operation section from page 13 for detailed information FAULT 1 Off 1 Flash Compressor Over Temperature Fault element h...

Страница 20: ...ensor 4 C or 45 C YES YES F NO Standby Mode Green LED On solid NO At least 45 minutes since the compressor last ran Fault detected D NO Green LED Off Red LED 9 flashes NO NO At least 15 minutes since...

Страница 21: ...fault NO YES NO NO Fault 9 Red LED 9 flashes YES Fault 8 Red LED 8 flashes Fault 1 Red LED 1 flash Fault 4 Red LED 4 flashes Fault 5 Red LED 5 flashes Fault 6 Red LED 6 flashes Fault 7 Red LED 7 flas...

Страница 22: ...onds Circulator on Circ Speed Variable YES HX water outlet sensor 35 C for more than 2 minutes Circulator speed maximum Fault detected NO Compressor has been operating for at least 10 minutes Evaporat...

Страница 23: ...sor 1 C for more than 15 minutes Circulator on Circ Speed Maximum Green LED 4 flashes Circulator has been on for 30 seconds Element on Green LED Long flash K YES Mechanical thermostat contacts open at...

Страница 24: ...m Green LED 4 flashes Red LED Off Circulator has been on for 30 seconds Red LED Off Element off Controller off YES At least 15 minutes since the circulator last ran A YES Faults 1 5 or 6 detected NO N...

Страница 25: ...or on Circ Speed Maximum Green LED 4 flashes Red LED Off YES Circulator off Green LED Off Red LED 9 flashes Reset button pressed at any stage NOTES 1 The reset button will reset Fault 9 reset the Faul...

Страница 26: ...CONDUIT INSIDE TANK JACKET PUMP PLUG COMPRESSOR PLUG FAN PLUG BLUE BLACK BROWN BLUE BLUE BLUE BLACK RED GREEN YELLOW RED WHITE RED GREEN YELLOW GREEN YELLOW BROWN BLACK LIGHT RED BLUE GREEN YELLOW GR...

Страница 27: ...ikely cause it is important to discuss with the customer their reasons for the complaint the duration of the problem any change in circumstances or usage and recent weather conditions This information...

Страница 28: ...ssure areas will have more complaints of this nature and the use of a pressure limiting valve PLV to reduce the household cold water pressure will usually solve most problems Hot water plumbing leaks...

Страница 29: ...t Pump Service Power Cable must be used to provide power to operate the unit in order to diagnose a fault and or conduct a full functional test at the completion of any service work The Heat Pump Serv...

Страница 30: ...d off peak power is unavailable Note The Proxy Tank Sensor must not be left in place after testing or as a substitute for a failed tank sensor as the heat pump will not turn off Element Plug In the ev...

Страница 31: ...m connector or terminal Resistance checks are performed on the part while it is disconnected from the controller Live testing to be conducted Personal Protective Clothing PPE shall be worn to reduce t...

Страница 32: ...thing not listed in this manual Unit in Standby Mode Is the tank sensor working TEST 1 If the tank sensor has failed replace the tank sensor If the tank sensor is OK replace the controller YES Is the...

Страница 33: ...reaker blow again YES NO YES NO YES NO NO YES NO No Hot Water No Power Reset circuit breaker or rewire fuse Are the thermostat contacts closed TEST 4 Are the thermostat ECO contacts closed TEST 3 NO N...

Страница 34: ...Diagnosis Chart YES 5 NO NO Element Mode Ambient is utilised if the ambient temperature is outside the heat pump s operating limits Normal Operation Reset the heat pump using the reset button and use...

Страница 35: ...heat pump is not suitable for off peak connection Connect to continuous tariff or off peak 2 if available YES YES Is the correct T PR valve fitted Replace the T PR valve with one of the correct press...

Страница 36: ...recent large draw off has reduced the hot water supply temperature Advise the customer to allow time for the heater to recover Is the outlet water temperature from the tempering valve approximately 48...

Страница 37: ...NO YES NO Is the condensate drain tube fitted Fit a condensate drain tube and advise the customer that some discharge of water is normal operation NO YES Is the leak from the T PR valve Remove the T...

Страница 38: ...ure release when a hot tap is opened This can be accompanied by a creaking or cracking sound Normal Operation Is the noise a metallic popping sound Check for a faulty stop cock non return valve or T P...

Страница 39: ...essor running when the green LED is NOT flashing OR when the Red LED is flashing YES NO WARNING The heat pump must NEVER be operated with the refrigeration system open to atmosphere WARNING When recla...

Страница 40: ...t and megger between each terminal of the thermostat and earth Disconnect the circulator wiring from the circulator and megger between each terminal and earth Is any reading below 1 megaohm 1 M NO Rep...

Страница 41: ...Fault Red LED 5 flashes Fault 5 Evaporator Sensor Fault Red LED 6 flashes Fault 6 Compressor Sensor Fault Red LED 7 flashes Fault 7 Heat Exchanger Water Outlet Sensor Fault Red LED 8 flashes Fault 8 W...

Страница 42: ...ES Reset the heat pump using the reset button and use the proxy sensor or draw off water to initiate a call for heating Does the evaporator fan come on at the same time as the compressor and run in th...

Страница 43: ...s Fault 4 Tank Sensor Fault 11 4 1 Ensure the sensor is firmly plugged into the correct socket 2 Ensure that the sensor plug pins are clean and making firm electrical contact NO Is the tank sensor fir...

Страница 44: ...e compressor sensor firmly plugged into the correct socket on the controller Is the compressor sensor working TEST 1 Replace the sensor NO YES Replace the controller YES Fault Finding Chart 11 7 Red L...

Страница 45: ...ll reset Fault 9 reset the Fault 9 counter and clear the stored Fault Code from the controller memory 2 Fault 9 will not disable all heating unless it has occurred 3 consecutive times 3 If Fault 9 has...

Страница 46: ...ted to the controller Is the circulator motor winding resistance correct TEST 14 Check the circulator impeller for restriction or seizure Replace the circulator NO NO Connect the fan wiring or plug fi...

Страница 47: ...lty compressor wiring Is 240V present at the compressor plug TEST 17 Replace the controller Are the compressor motor winding resistances correct TEST 18 YES 9 Compressor internal overload switch may h...

Страница 48: ...est left in place as long as the evaporator coil temperature can be confirmed Using a multimeter set on the resistance kilo ohms scale measure between the two pins of the sensor plug As the resistance...

Страница 49: ...s 240V AC Using a multimeter set on the resistance ohms scale measure between the terminals of the mechanical thermostat The following results should be obtained when the ECO is closed 1 2 0 1 3 4 0 1...

Страница 50: ...es Normal resistance for the element is 1 8kW 29 35 2 4kW 22 26 3 6kW 15 17 Test 7 Fit gauges to the suction low side access valve and observe the suction pressure The suction pressure is dependent on...

Страница 51: ...ischarge pressure in excess of 2100kPa may indicate a low water flow rate or an overcharge of refrigerant Note Refer to the Refrigerant Charge section on page 54 for more information on refrigerant ch...

Страница 52: ...ller and using a multimeter set on the resistance ohms scale measure between the disconnected fan plug pins The following run and start winding results should be obtained Blue black wires Run 650 Blue...

Страница 53: ...circulator plug Normal resistance is 602 Unplug the HP switch from the controller and using a multimeter set on the resistance ohms scale measure between the pins of the HP switch plug Normal resistan...

Страница 54: ...e system or when the TX valve adjusts quickly however clear liquid should return shortly after The compressor current draw and system pressures should be within the normal range and operating temperat...

Страница 55: ...tral of the water heater wiring and earth 4 Operate megger on the 500V DC setting A reading above 1 M should be obtained 5 If a reading below 1 M is indicated all component parts will need to be indiv...

Страница 56: ...the other end to a drain or safe location 7 Open the T PR valve or a hot tap to allow air into the system Temperature and Pressure Relief Valve Never fit a T PR valve with a rating higher than that in...

Страница 57: ...olate power to the water heater 2 For AquaMax storage tanks only remove the heat pump module Follow steps 6 8 of the Heat Pump Module Removal procedure on page 62 3 Remove the storage tank upper elect...

Страница 58: ...he storage tank upper electrical access cover and confirm with a multi meter across thermostat terminals 1 and 3 that voltage is not present 4 For Rheem Everhot and Solahart storage tanks remove the h...

Страница 59: ...the cold pipe from the cold water connector slide the tool over the pipe and push down against the quick connect fitting whilst pulling up on the cold pipe 4 Screw new cold water connector into cylind...

Страница 60: ...emPlus Models on page 60 Tempering Valve Adjustment Procedure RheemPlus Models 1 Ensure heater is at operating temperature 60 70 C This can be checked at the T PR valve 2 Remove the tempering valve co...

Страница 61: ...e cold water inlet filter and non return valve Unscrew quick connect fitting and gently prise out filter and then non return valve a C clip is not fitted Reassemble in reverse order ensuring that the...

Страница 62: ...and heat pump module at the controller refer to the diagram opposite 5 Where a ball valve and check valve are fitted to the storage tank isolate the water supply to the water heater relieve pressure...

Страница 63: ...becomes available 15 Remove the handles speed clips LED panel and LED label integrated LED on Solahart models if required 16 Reassemble in reverse order of above NOTE The jacket is quite flexible car...

Страница 64: ...age 62 5 Remove the heat pump module access panel 6 Disconnect the compressor sensor plug from the controller 7 Release the sensor cable from its fixings 8 Gently peel back the discharge pipe insulati...

Страница 65: ...eplacement ii On all models other than Solahart models the LED label is an adhesive label and is not physically connected to the LED panel iii On Solahart models the LED panel and label are a single p...

Страница 66: ...ed wherever possible WARNING Heat must NOT be applied to plastic components When brazing pipework a heat shield must be used to prevent the possibility of damage Requirements Only personnel qualified...

Страница 67: ...s are never pointed towards the face Remove the pipe caps from the new filter drier and install the caps onto the removed filter drier The caps may be split so be sure to securely tape the caps in pla...

Страница 68: ...round the compressor should sit on the chassis and wrap around the mounting feet 18 Evacuate system to 500 microns of mercury 65Pa absolute for at least 30 minutes 19 Recharge the system with the corr...

Страница 69: ...Heat Pump Module Removal procedure on page 62 2 Remove the heat pump module outer jacket Follow steps 6 14 of the Outer Jacket procedure on page 62 3 Remove the pipe insulation from the discharge lin...

Страница 70: ...charge line from the compressor 12 Remove the 2 screws securing the evaporator coil to the chassis side member on the heat exchanger end only 13 Gently lift the evaporator coil to create enough cleara...

Страница 71: ...tray Refit any cabling to fixings as required 24 Refit the 2 screws that secure the evaporator coil to the chassis side member through the evaporator drip tray 25 Braze the filter drier to the sight...

Страница 72: ...ure to securely tape the caps in place on the removed filter drier 5 Braze the replacement sight glass and filter drier into place being sure to nitrogen purge 6 Pressurise the refrigeration system wi...

Страница 73: ...inutes confirm operating pressures are acceptable refer to page 54 10 Isolate power and remove gauges 11 Check the flexible hose connections for water leaks 12 Refit the heat pump module access cover...

Страница 74: ...wer supply to the water heater Evaporator Coil 1 hour WARNING Heat must NOT be applied to plastic components When brazing pipework as indicated in this procedure a heat shield must be used to prevent...

Страница 75: ...e 1 o clock position and refit the insulation 20 Replace the filter drier Follow steps 4 and 5 of the Filter Drier procedure on page 67 21 Pressurise the refrigeration system with nitrogen to 2500kPa...

Страница 76: ...MENT REVISION HISTORY Title 325 410 Series II Heat Pump Service Instructions Document N TM077 Revision Details of Change Date of Issue First Issue Service Instructions issued for 325 410 Series II Hea...

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