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PrecisionTemp PT-200FT, Service Manual

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PrecisionTemp PT-200FT Service Manual Download Page 36

Rev 8/2014 

PrecisionTemp, Inc • 11 Sunnybrook Drive • Cincinnati, Ohio, 45237 • 1-800-934-9690 • 
fax 513-641-0733                                        36 

 
 
 

 
PT-200RC & PT-56 (Recirculating) Service Codes 
 

The following service codes are shown by the red and green flashing LED 
located on the front of the electronics drawer behind the front access door.  
These codes indicate the type of malfunction.   

 

 

Alternating green and red flash 

Lost auto calibration or no auto calibration displays.  See 

SB-7-RC   

 

 

Steady red and flashing green LED 
 

T-mid or T-out Thermistor failure.  See

 SB-15 and SB-17.

 

 

Red and green LEDs flashing together 

Lock out after 10 ignition attempts.  Turn booster power switch off, 
wait 15 seconds and turn back on.   

 
 
 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Summary of Contents for PT-200FT

Page 1: ...not turn any electrical switch on or off Do not use the phone in your building Immediately call your gas supplier from a neighbor s phone If you cannot reach your gas supplier contact the fire depart...

Page 2: ...r NO additional time reimbursements will be made without prior authorization All warranty parts must be returned within 15 days of completing repair return label supplied All warranty invoices must be...

Page 3: ...er Supply Change Procedure o SB 1A 24 Volt Power Supply Change Procedure o SB 2 Pressure Switch Adjustment o SB 3 Circuit Board Replacement o SB 5 Igniter Change and Spark Gap Adjustment o SB 6 Direct...

Page 4: ...RECISIONTEMP BE LIABLE FOR INCIDENTAL SPECIAL OR CONSEQUENTIAL DAMAGES SUCH AS LOSS OF USE OR INJURY TO OTHER PROPERTY LABOR COSTS OR LOST PROFITS RESULTING FROM USE OR INABILITY TO USE PRODUCT IN ORD...

Page 5: ...this warranty This warranty does not cover any failures or operating problems due to abuse accident alteration of equipment improper installation negligence application of improper voltage or recalib...

Page 6: ...M Eastern time call one of the above numbers in advance for the phone number of a PrecisionTemp technician to assist you after hours 2 If it is known in advance that a part is needed for the service t...

Page 7: ...ed by the ware washer such as liming or defective solenoid valves Excessively long recirculation loops or undersized plumbing components Any problem that is a result of any of the above situations tha...

Page 8: ...covered for a period of 90 days from the time of installation Parts replaced under the terms of basic product warranty are covered through the product warranty period or 90 days whichever is greater...

Page 9: ...y 0 30 0 3 1615 Relay 12v DC Control 0 30 0 2 1616 Pressure Switch 0 30 0 2 0 2 1634 Pressure Reducing Valve Parts Only 1749 ECO 0 2 0 2 0 1 1752 Pressure Relief Valve Parts Only 1765 Ignition Wiring...

Page 10: ...m be installed b PT 200OR 125 000BTU same as the PT 200FT it is used for newer low flow water conserving dishmachines Rinse flow rate 2 3gpm For service issues use the PT 200FT installation operation...

Page 11: ...Rev 8 2014 PrecisionTemp Inc 11 Sunnybrook Drive Cincinnati Ohio 45237 1 800 934 9690 fax 513 641 0733 11...

Page 12: ...ive Cincinnati Ohio 45237 1 800 934 9690 fax 513 641 0733 12 Turbine Flowmeter 3226 Pressure Switch 2937 Illustration 200 3226 Illustration 200 2937 Ignition Board pedestal 3166 DSI Ignition Board 315...

Page 13: ...Rev 8 2014 PrecisionTemp Inc 11 Sunnybrook Drive Cincinnati Ohio 45237 1 800 934 9690 fax 513 641 0733 13...

Page 14: ...Rev 8 2014 PrecisionTemp Inc 11 Sunnybrook Drive Cincinnati Ohio 45237 1 800 934 9690 fax 513 641 0733 14...

Page 15: ...Rev 8 2014 PrecisionTemp Inc 11 Sunnybrook Drive Cincinnati Ohio 45237 1 800 934 9690 fax 513 641 0733 15...

Page 16: ...Rev 8 2014 PrecisionTemp Inc 11 Sunnybrook Drive Cincinnati Ohio 45237 1 800 934 9690 fax 513 641 0733 16...

Page 17: ...Rev 8 2014 PrecisionTemp Inc 11 Sunnybrook Drive Cincinnati Ohio 45237 1 800 934 9690 fax 513 641 0733 17...

Page 18: ...Rev 8 2014 PrecisionTemp Inc 11 Sunnybrook Drive Cincinnati Ohio 45237 1 800 934 9690 fax 513 641 0733 18...

Page 19: ...Rev 8 2014 PrecisionTemp Inc 11 Sunnybrook Drive Cincinnati Ohio 45237 1 800 934 9690 fax 513 641 0733 19...

Page 20: ...d on to the black solid state relay that powers the power vent blower The relay closes the 110v AC contacts to start the blower Fluing is proofed by the clear vacuum tube that runs from the blower to...

Page 21: ...ter temperature and sends a flow signal to the control board The green control board sends 12v DC through the brown wire to the pressure differential switch and on to the black solid state relay that...

Page 22: ...lasting up to 5 5 seconds max each Ignition of the burner s center element is effected and the flame is proofed and monitored through the same yellow wire to the ignition module The green control boar...

Page 23: ...Rev 8 2014 PrecisionTemp Inc 11 Sunnybrook Drive Cincinnati Ohio 45237 1 800 934 9690 fax 513 641 0733 23...

Page 24: ...Rev 8 2014 PrecisionTemp Inc 11 Sunnybrook Drive Cincinnati Ohio 45237 1 800 934 9690 fax 513 641 0733 24...

Page 25: ...Rev 8 2014 PrecisionTemp Inc 11 Sunnybrook Drive Cincinnati Ohio 45237 1 800 934 9690 fax 513 641 0733 25...

Page 26: ...Rev 8 2014 PrecisionTemp Inc 11 Sunnybrook Drive Cincinnati Ohio 45237 1 800 934 9690 fax 513 641 0733 26...

Page 27: ...Rev 8 2014 PrecisionTemp Inc 11 Sunnybrook Drive Cincinnati Ohio 45237 1 800 934 9690 fax 513 641 0733 27...

Page 28: ...Rev 8 2014 PrecisionTemp Inc 11 Sunnybrook Drive Cincinnati Ohio 45237 1 800 934 9690 fax 513 641 0733 28...

Page 29: ...Rev 8 2014 PrecisionTemp Inc 11 Sunnybrook Drive Cincinnati Ohio 45237 1 800 934 9690 fax 513 641 0733 29...

Page 30: ...Rev 8 2014 PrecisionTemp Inc 11 Sunnybrook Drive Cincinnati Ohio 45237 1 800 934 9690 fax 513 641 0733 30...

Page 31: ...Rev 8 2014 PrecisionTemp Inc 11 Sunnybrook Drive Cincinnati Ohio 45237 1 800 934 9690 fax 513 641 0733 31...

Page 32: ...Rev 8 2014 PrecisionTemp Inc 11 Sunnybrook Drive Cincinnati Ohio 45237 1 800 934 9690 fax 513 641 0733 32...

Page 33: ...Rev 8 2014 PrecisionTemp Inc 11 Sunnybrook Drive Cincinnati Ohio 45237 1 800 934 9690 fax 513 641 0733 33...

Page 34: ...Rev 8 2014 PrecisionTemp Inc 11 Sunnybrook Drive Cincinnati Ohio 45237 1 800 934 9690 fax 513 641 0733 34...

Page 35: ...pause pause pause Indicates T mid thermistor yellow wire has failed or is unplugged Booster heater will not operate correctly until problem is corrected Consult SB 15 or SB 17 to correct Two red flash...

Page 36: ...the front of the electronics drawer behind the front access door These codes indicate the type of malfunction Alternating green and red flash Lost auto calibration or no auto calibration displays See...

Page 37: ...ll the incorrect power supply it will damage the unit and void any warranty 3 Remove the 4 screws holding the power supply bracket and remove the power supply 4 On the new power supply find the wire t...

Page 38: ...ire that has the Female socket Attach this lead to the Molex connector supplying the white power wire to the gas modulating valve The plain black lead with the Ring connector connects to the ground sc...

Page 39: ...turn the adjustment screw on the pressure switch type may vary counter clockwise until the burner ignites 4 Disconnect the exhaust flue at the first joint outside the booster heater case Block flue e...

Page 40: ...wer 5 Reconnect all connectors to the board CAUTION there are three two pin connectors Be sure that the power supply connector red and green wire goes to upper right corner red connector and the modul...

Page 41: ...e Model PT 200FT PT 200RC PT 56 Software versions 9097 software is for the standard Flow Through model current version available 9097J or T 4 5 gpm rinse cycle 9099 software is for the OR Flow Through...

Page 42: ...Rev 8 2014 PrecisionTemp Inc 11 Sunnybrook Drive Cincinnati Ohio 45237 1 800 934 9690 fax 513 641 0733 42...

Page 43: ...ter see figure 200 10 3 Disconnect the ignition wire from the igniter 4 Using a Phillips screwdriver remove the two screws attaching the igniter to burner and remove 5 Install the new igniter and chec...

Page 44: ...e the DSI board 4 Install the new DSI board and re attach the wire harnesses Be sure to route the yellow or black ignition wire separate from the other control harnesses If a new harness is supplied u...

Page 45: ...2 Lock the dish machine in rinse mode Rinse MUST stay on for the entire procedure 3 Turn heater power on Green LED should flash and burner comes on to high burn and immediately drops back to low burn...

Page 46: ...3 Lock the dish machine in rinse mode Rinse MUST stay on for the duration of this process 4 Place a magnet on the modulating gas line just right of the electrical coil and move it slowly towards the...

Page 47: ...recirculating system is cooler than set temperature on booster under 140 F If unable to verify keep booster heater power off and run the dishmachine rinse 3 Turn booster heater power switch on The uni...

Page 48: ...ter in recirculating system is cooler than set temperature on booster under 140 F If unable to verify keep booster heater power off and run the dishmachine rinse 3 Place magnet on modulating valve jus...

Page 49: ...IONS BEING VERY CAREFUL NOT TO ALLOW ANY TO PENETRATE THE MODULATING VALVE CAVITY IF THIS IS NOT STRICTLY FOLLOWED IT WILL CAUSE THE MODULATING VALVE TO BECOME STICKY AND MALFUNCTION AND HEATER WILL N...

Page 50: ...ws 1 Open access door of heater Open the electronic drawer The adjustment screw is located on a small blue block at the lower right corner of the electronics board see reference illustration 200 14 2...

Page 51: ...the relay the relay will only be energized for 8 seconds after power is turned on 4 If power is present continue to next step If not please refer back to the troubleshooting guide 5 Switch your multi...

Page 52: ...er heater 5 Remove all gas line plumbing between the gas valve and half union 6 Separate the union to the left of the modulating gas valve 7 Remove the combination gas valve and modulating gas valve f...

Page 53: ...e a pause in the green LED with the rinse running the flow meter is not sensing flow or no water is passing through booster or you have a recirculating booster heater See PT 200RC troubleshooting diag...

Page 54: ...booster heater back on 8 With your manometer and multi meter connected lock the dish machine into a rinse mode reconnect electrical power to the booster heater and turn the PT 200 56 on 9 At ignition...

Page 55: ...the thermistor without electrical leads into the heat exchanger until the heat shrink black on the thermistor touches the fitting and tighten the fitting finger tight The final tightening should be do...

Page 56: ...heat sink with the wire leads pointing down along the tube 5 Wrap metal tape around the tube and thermistor 6 Attach the wire tie Wrap the wire tie about 1 2 away from the thermistor head to hold the...

Page 57: ...o the Thermistor Calibration table The black multi meter probe should go into the black test point and the red probe should go into the following test points Orange Red Test Point Outlet temperature T...

Page 58: ...Rev 8 2014 PrecisionTemp Inc 11 Sunnybrook Drive Cincinnati Ohio 45237 1 800 934 9690 fax 513 641 0733 58...

Page 59: ...S 1462 using the phillips screwdriver Remove the ten 10 screws attaching the case shroud AS 1462 to the base CS 1455 Remove the shroud 13 Open the two compression fittings PF 1547 from the step above...

Page 60: ...pliers 24 Remove upper screw on the Power supply bracket and bend forward to help access pump flange bolts 25 Using a 5 8 wrench remove the four bolts from the two pump flanges Remove the pump 26 Ins...

Page 61: ...output temperature in the table below and then go to the column that specifies the T set voltage Refer to section 4 11 Thermistor Checkout T mid T out for a description on how to read T set Outlet Te...

Page 62: ...4 1465 3 Gallon Water Tank Stainless Steel Tank for PT 56 1467 3 8 Modulating gas valve PT 56 LPG 1473 PT 56 3 4 Pressure relief valve 215F 150 PSI 1496 Power wire harness to control board 1570 PT 56...

Page 63: ...ure Switch normally open After 1 31 07 12VDC 2957 3 4 NG Modulating Gas Valve Assy PT 200 NG OR 3158 DSI Board 3166 DSI Board mounting pedestal 1489AF Grundfos pump UP 26 96 BF PT 200RC PT 56 1841 200...

Page 64: ...513 641 0733 64 1495 PT 200RC PT 56 Thermistor Harness 2065 PT 200FT NG Burner Manifold Assy 2500 PT 200 OR NG Burner Manifold Assy 1777 PT 56 LPG Burner Manifold Assy 1819 PT 56 NG Burner Manifold A...

Page 65: ...OR low flow booster during the dish machine rinse cycle 5 Inspect for clean combustion viewed through sight glass blue flame not yellow 6 Inspect exterior of copper heat exchanger for dark discolorati...

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