background image

Manual

2100-420H

Page

29 of 34

CHECKING TEMPERATURE SENSOR

1. Disconnect temperature sensor from board and from

outdoor coil.

2. Use an ohmmeter and measure the resistance of the

sensor.  Also use ohmmeter to check for short or
open.

3. Check resistance reading to chart of resistance use

sensor ambient temperature.  (Tolerance of part is ±
10%.)

4. If sensor resistance reads very low, then sensor is

shorted and will not allow proper operation of the
heat pump control.

5. If sensor is out of tolerance, shorted, open, or reads

very low ohms then it should be replaced.

SOLID STATE HEAT PUMP CONTROL
TROUBLESHOOTING PROCEDURE

1.

NOTE:

 

A thorough understanding of the defrost

cycle sequence is essential.  Review that section
earlier in this manual prior to troubleshooting the
control.  

Turn on AC power supply to unit.

2. Turn thermostat blower switch to “fan on” – the

indoor blower should start.  (If it doesn’t,
troubleshoot indoor unit and correct problem.)

3. Turn thermostat blower to “auto” position.  Indoor

blower should stop.  

NOTE:

 

Many models have a

1-minute blower time delay on “off” command;
wait for this to time-out.

4. Set system switch to “heat” or “cool”.  Adjust

thermostat to call for heat or cool.  The indoor
blower, compressor  and outdoor fan should start.

NOTE:  If there was no power to 24 volt transformer,
the compressor and outdoor fan motor will not start for
5 minutes.  This is because of the compressor short
cycle protection.

TABLE  6

TEMPERATURE (F) VS RESISTANCE (R) OF TEMPERATURE SENSOR

F

R

F

R

F

R

F

R

0

.

5

2

-

0

.

4

2

-

0

.

3

2

-

0

.

2

2

-

0

.

1

2

-

0

.

0

2

-

0

.

9

1

-

0

.

8

1

-

0

.

7

1

-

0

.

6

1

-

0

.

5

1

-

0

.

4

1

-

0

.

3

1

-

0

.

2

1

-

0

.

1

1

-

0

.

0

1

-

0

.

9

-

0

.

8

-

0

.

7

-

0

.

6

-

0

.

5

-

0

.

4

-

0

.

3

-

0

.

2

-

0

.

1

-

0

.

0

0

.

1

0

.

2

0

.

3

0

.

4

0

.

5

0

.

6

0

.

7

0

.

8

0

.

9

0

.

0

1

0

.

1

1

0

.

2

1

1

7

8

6

9

1

9

9

0

0

9

1

5

8

5

3

8

1

8

1

3

7

7

1

9

8

2

1

7

1

7

8

4

5

6

1

4

0

9

9

5

1

9

2

5

4

5

1

5

5

3

9

4

1

4

7

3

4

4

1

6

7

5

9

3

1

6

5

9

4

3

1

6

0

5

0

3

1

9

1

2

6

2

1

9

8

0

2

2

1

8

0

1

8

1

1

2

7

2

4

1

1

5

7

5

0

1

1

0

1

0

7

0

1

4

7

5

3

0

1

0

6

2

0

0

1

4

6

0

7

9

1

8

9

3

9

8

0

0

1

9

9

3

1

8

8

1

7

3

5

8

9

9

6

2

8

1

2

1

0

8

2

3

6

7

7

0

3

2

5

7

0

1

9

2

7

0

7

6

0

7

7

0

5

8

6

8

1

4

6

6

9

9

3

4

6

9

4

4

2

6

5

6

5

0

6

5

4

7

8

5

0

.

3

1

0

.

4

1

0

.

5

1

0

.

6

1

0

.

7

1

0

.

8

1

0

.

9

1

0

.

0

2

0

.

1

2

0

.

2

2

0

.

3

2

0

.

4

2

0

.

5

2

0

.

6

2

0

.

7

2

0

.

8

2

0

.

9

2

0

.

0

3

0

.

1

3

0

.

2

3

0

.

3

3

0

.

4

3

0

.

5

3

0

.

6

3

0

.

7

3

0

.

8

3

0

.

9

3

0

.

0

4

0

.

1

4

0

.

2

4

0

.

3

4

0

.

4

4

0

.

5

4

0

.

6

4

0

.

7

4

0

.

8

4

0

.

9

4

0

.

0

5

5

8

9

6

5

4

8

2

5

5

0

4

6

3

5

1

5

0

2

5

4

1

5

0

5

8

2

0

9

4

0

9

5

7

4

0

0

2

6

4

5

5

8

4

4

4

5

5

3

4

5

9

2

2

4

7

7

0

1

4

8

9

8

9

3

7

5

7

8

3

2

5

6

7

3

3

8

5

6

3

8

4

5

5

3

5

4

5

4

3

4

7

5

3

3

4

3

6

2

3

3

2

7

1

3

0

4

8

0

3

6

8

9

9

2

7

5

1

9

2

5

5

3

8

2

7

7

5

7

2

3

2

8

6

2

2

9

0

6

2

3

8

3

5

2

6

9

6

4

2

0

3

0

4

2

4

8

3

3

2

8

5

7

2

2

0

5

1

2

2

1

6

5

1

2

9

8

9

0

2

5

3

4

0

2

6

9

8

9

1

0

.

3

5

0

.

2

5

0

.

3

5

0

.

4

5

0

.

5

5

0

.

6

5

0

.

7

5

0

.

8

5

0

.

9

5

0

.

0

6

0

.

1

6

0

.

2

6

0

.

3

6

0

.

4

6

0

.

5

6

0

.

6

6

0

.

7

6

0

.

8

6

0

.

9

6

0

.

0

7

0

.

1

7

0

.

2

7

0

.

3

7

0

.

4

7

0

.

5

7

0

.

6

7

0

.

7

7

0

.

8

7

0

.

9

7

0

.

0

8

0

.

1

8

0

.

2

8

0

.

3

8

0

.

4

8

0

.

5

8

0

.

6

8

0

.

7

8

0

.

8

8

4

7

3

9

1

7

6

8

8

1

5

7

3

8

1

9

8

9

7

1

4

3

4

7

1

4

8

9

6

1

7

4

5

6

1

2

2

1

6

1

0

1

7

5

1

0

1

3

5

1

1

2

9

4

1

4

4

5

4

1

7

7

1

4

1

0

2

8

3

1

4

7

4

3

1

7

3

1

3

1

0

1

8

2

1

2

9

4

2

1

3

8

1

2

1

3

8

8

1

1

1

9

5

1

1

7

0

3

1

1

1

3

0

1

1

2

6

7

0

1

1

0

5

0

1

7

4

2

0

1

0

0

0

0

1

0

6

7

9

6

2

5

9

9

9

2

9

7

7

0

9

2

6

8

8

3

5

6

8

9

4

4

8

0

5

2

8

7

5

0

8

9

6

8

7

6

8

6

7

0

.

9

8

0

.

0

9

0

.

1

9

0

.

2

9

0

.

3

9

0

.

4

9

0

.

5

9

0

.

6

9

0

.

7

9

0

.

8

9

0

.

9

9

0

.

0

0

1

0

.

1

0

1

0

.

2

0

1

0

.

3

0

1

0

.

4

0

1

0

.

5

0

1

0

.

6

0

1

0

.

7

0

1

0

.

8

0

1

0

.

9

0

1

0

.

0

1

1

0

.

1

1

1

0

.

2

1

1

0

.

3

1

1

0

.

4

1

1

0

.

5

1

1

0

.

6

1

1

0

.

7

1

1

0

.

8

1

1

0

.

9

1

1

0

.

0

2

1

0

.

1

2

1

0

.

2

2

1

0

.

3

2

1

0

.

4

2

1

7

0

5

7

4

3

3

7

5

6

1

7

0

0

0

7

0

4

8

6

3

8

6

6

1

3

5

6

3

8

3

6

9

3

2

6

8

9

0

6

1

6

9

5

7

2

8

5

7

9

6

5

0

7

5

5

6

4

4

5

6

2

3

5

8

0

2

5

4

9

0

5

2

8

9

4

3

7

8

4

7

6

7

4

3

6

6

4

2

6

5

4

4

6

4

4

7

6

3

4

4

7

2

4

2

8

1

4

3

9

0

4

6

0

0

4

1

2

9

3

8

3

8

3

7

5

7

3

8

7

6

3

1

0

6

3

6

2

5

3

2

5

4

3

Summary of Contents for QTEC QH243

Page 1: ...62 QH422 QH482 QH602 QTEC SERIES PACKAGED HEAT PUMP INSTALLATION INSTRUCTIONS Bard Manufacturing Company Inc Bryan Ohio 43506 Since 1914 Moving ahead just as planned Manual 2100 420H Supersedes 2100 4...

Page 2: ...2 Air Seal on Bottom of Unit 8 Figure 3 Removal of Unit From Skid 8 Figure 4 Unit on Appliance Cart for Moving 9 Figure 5 Installation With Free Blow Plenum 10 Figure 6 Ducted Application 10 Figure 7...

Page 3: ...mer Manual N Air Conditioning Low Pressure Low Velocity ACCA Manual D or Duct System Design Manual Q Winter and Summer Air Conditioning FOR MORE INFORMATION CONTACT THESE PUBLISHERS ACCA Air Condition...

Page 4: ...0 0 1 4 0 5 1 0 5 1 9 4 0 6 8 6 3 0 5 1 9 4 0 6 8 6 3 0 5 1 9 4 QTEC Series General Information QTEC MODEL NOMENCLATURE QH 36 2 A 10 X X X X X X SPECIAL UNITS L Low Ampacity Circuit REVISION VOLTS PHA...

Page 5: ...R I C R E K A E R B 2 D L E I F R E W O P E R I W E Z I S 2 D N U O R G E R I W E Z I S 3 M U M I N I M T I U C R I C Y T I C A P M A 1 M U M I X A M L A N R E T X E R O E S U F T I U C R I C R E K A...

Page 6: ...H Q 6 0 B 9 0 B 5 5 1 B 3 8 0 2 0 3 2 1 1 1 1 6 2 4 4 3 5 3 5 0 4 0 5 0 6 0 6 8 8 6 6 0 1 0 1 0 1 0 1 Z 0 C 2 8 4 H Q 6 0 C 9 0 C 5 5 1 C 3 0 6 4 1 1 1 1 4 1 3 2 7 2 7 2 5 1 5 2 0 3 0 3 4 1 0 1 0 1 0...

Page 7: ...Manual 2100 420H Page 7 of 34 FIGURE 1 UNIT DIMENSIONS...

Page 8: ...emoved to provide a place to hold the unit The unit can be slid forward on the skid until the front wheels hang over the edge of the skid See Figure 3 B The unit can be tipped forward and slid down th...

Page 9: ...eparate equipment required to make up the entire air conditioning system should be carefully read before beginning the installation Note particularly Start Procedure and any tags and or labels attache...

Page 10: ...Manual 2100 420H Page 10 of 34 FIGURE 6 DUCTEDAPPLICATION FIGURE 5 INSTALLATION WITH FREE BLOW PLENUM...

Page 11: ...ither free blow with the use of QPB Plenum Box or a duct supply air system The QPB and QPBHW Plenum Box mounts on top of the unit and has both vertically and horizontally adjustable louvers on the fro...

Page 12: ...cated on the bottom right side of the unit The side drain is shipped with a plug installed The side drain requires a water trap for proper drainage See Figure 9 The drain can be routed through the flo...

Page 13: ...pressure device This indicates that the unit needs to be serviced FIGURE 12 UNIT MOUNTING BOTTOM TRIM PIECE BOTTOM TRIM EXTENSION MOUNTING BRACKET SIDE TRIM 2 PCS SIDE TRIM 2 PCS CABINET SIDE PANEL E...

Page 14: ...to keep it centered in the sleeve Also check the alignment to the mounting brackets This unit must be level from side to side If adjustments are necessary shim up under the rollers with sheets of ste...

Page 15: ...mplete current carrying capacity data on the various insulation grades of wiring material All wiring must conform to NEC and all local codes The electrical data lists fuse and wire sizes 75 C copper f...

Page 16: ...talled ventilation option E terminal or pin 3 of P2 is the emergency heat input This terminal energizes the emergency heat relay R O F S N O I T C E N N O C E G A T L O V W O L L O R T N O C C D D y l...

Page 17: ...t a e H e g a t s 3 l o o C e g a t s 3 c i n o r t c e l E e l b a m m a r g o r P n o N e l b a m m a r g o r P l a n o i t n e v n o C r o P H r e v o e g n a h c l a u n a M r o o t u A 8 5 0 3 0...

Page 18: ...16 REMOTE THERMOSTAT WIRING DIAGRAM X THERMOSTAT OPTION NOTE On option X or A the CS2000A1 or other field provided means to control ventilation must be used if any of the motorized ventilation option...

Page 19: ...4 FIGURE 17 UNIT MOUNTED THERMOSTAT WIRING DIAGRAM A THERMOSTAT OPTION NOTE On option X or A the CS2000A1 or other field provided means to control ventilation must be used if any of the motorized vent...

Page 20: ...Manual 2100 420H Page 20 of 34 FIGURE 18 UNIT MOUNTED THERMOSTAT WIRING DIAGRAM D THERMOSTAT OPTION...

Page 21: ...sor damage due to phase reversal The phase monitor in this unit is equipped with two LEDs If the Y signal is present at the phase monitor and phases are correct the green LED will light and the compre...

Page 22: ...side panel g Remove screws that attach the duct work to the unit flanges This unit is equipped with four rollers mounted to the base For ease of pulling unit out from the wall you may want to remove t...

Page 23: ...t be raised up and the bottom can be pulled toward the front of the unit and removed VENT OPTIONS BAROMETRIC FRESH AIR DAMPER Standard Before starting make sure the power has been turned off The retur...

Page 24: ...Manual 2100 420H Page 24 of 34 FIGURE 19 FRESH AIR DAMPER REMOVAL MOUNTING SCREW...

Page 25: ...Manual 2100 420H Page 25 of 34 FIGURE 20 QERV REMOVAL MOUNTING SCREWS FRONT FILL LOWER BLOWER ASSEMBLY POWER CONNECTOR POWER CONNECTORS...

Page 26: ...ontrol panel The lockout circuit will hold compressor off line When the system problem is corrected the unit operation can be restored by turning of the main power supply off and then back on or reset...

Page 27: ...another 1 4 inch QC to short between the SPEEDUP terminals to accelerate the HPC timer and initiate defrost Be careful not to touch any other terminals with the instrument used to short the SPEEDUP t...

Page 28: ...h t l o r t n o c p m u p t a e h e h t n o 1 L o t C d n a Y o t C m o r f t n e s e r p s i V 4 2 f I l o r t n o c p m u p t a e h e h t e c a l p e r C C t a t n e s e r p s i V 4 2 o n d n a d e...

Page 29: ...1 9 1 2 6 2 1 9 8 0 2 2 1 8 0 1 8 1 1 2 7 2 4 1 1 5 7 5 0 1 1 0 1 0 7 0 1 4 7 5 3 0 1 0 6 2 0 0 1 4 6 0 7 9 1 8 9 3 9 8 0 0 1 9 9 3 1 8 8 1 7 3 5 8 9 9 6 2 8 1 2 1 0 8 2 3 6 7 7 0 3 2 5 7 0 1 9 2 7 0...

Page 30: ...it s air noise cabinet duct or motor noise interview customer if necessary Air noise High static creating high blower speed Is airflow set properly Does removing filter cause blower to slow down Check...

Page 31: ...2 0 CONTROL control in cast aluminum can with air vents on the back of the can WITH AN ECM 2 3 CONTROL control containing black potting for water protection in black deep drawn steel case with no ven...

Page 32: ...with a refrigerant charge resulting in a Super Heat as shown in Table 8 If correct charge is in doubt recover the refrigerant and recharge per the charge on the unit rating plate L E D O M A N O I S N...

Page 33: ...B W 2 6 e d i S w o L e d i S h g i H 4 7 2 1 2 4 7 5 1 2 5 7 3 3 2 6 7 1 5 2 7 7 9 6 2 8 7 7 8 2 9 7 5 0 3 0 8 3 2 3 1 8 1 4 3 B D 0 8 B W 7 6 e d i S w o L e d i S h g i H 9 7 9 1 2 9 7 0 2 2 0 8 9...

Page 34: ...4 3 9 1 5 4 9 9 1 9 4 5 0 2 4 5 1 1 2 8 5 7 1 2 2 6 2 2 2 7 6 8 2 2 2 6 3 H Q 0 7 e d i S w o L e d i S h g i H 3 1 7 4 1 7 1 3 5 1 1 2 9 5 1 5 2 4 6 1 0 3 1 7 1 4 3 6 7 1 8 3 2 8 1 2 4 8 8 1 6 4 4 9...

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