Armstrong Air Conditioning 4SHP16LT Series Installation And Maintenance Instructions Manual Download Page 21 | Manualshive

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Page 21

Table 12

Miswired Module Troubleshooting

Thermostat Demand Wiring

The diagnostic module requires a thermostat demand
signal to operate properly. The thermostat demand signal
input, labeled Y on the module, should always be con-
nected to the compressor contactor coil so that when the
coil is energized, the demand signal input is 24VAC.
When the coil is not energized, the demand signal input
should be less than 0.5VAC.

Miswired Module Codes

Depending on the system configuration, some ALERT
flash codes may not be active. The presence of safety
switches affects how the system alerts are displayed by
the module.

Miswiring the diagnostic module will cause false LED
codes. Table 12 describes LED operation when the
module is miswired and what troubleshooting action is
required to correct the problem.

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Summary of Contents for 4SHP16LT Series

Page 1: ...mote power supplies before installing or servicing any portion of the system Failure to disconnect power supplies can result in property damage personal injury or death WARNING The equipment covered i...

Page 2: ...his product has been designed and manu factured to meet ENERGY STAR criteria for energy effi ciency when matched with appropriate coil components However proper refrigerant charge and proper air flow...

Page 3: ...of the control box Connect conduit to the control box using a proper conduit fitting Units are approved for use only with copper conductors 24V Class II circuit connections are made in the low voltag...

Page 4: ...0 6 3 8 3 8 3 8 3 8 3 2 1 0 0 0 2 4 8 3 8 3 8 3 2 1 2 1 0 0 0 8 4 8 3 8 3 8 3 2 1 2 1 0 0 0 0 6 8 3 8 3 8 3 2 1 2 1 Figure 3 Thermostat Designations Some connections may not apply Refer to specific t...

Page 5: ...how to install line sets on horizontal runs Figure 6 shows how to make a transition from horizontal to vertical Figure 7 shows how to install line sets on vertical runs Brazing Connection Procedure 1...

Page 6: ...lex Liquid Line Strap Liquid Line to Vapor Line Figure 5 To hang line set from joist or rafter use either metal strapping material or anchored heavy nylon wire ties Strapping Material around vapor lin...

Page 7: ...an insulator preventing proper heat transfer It can also clog the thermal expansion valve reducing system performance and capacity Failure to properly flush system as explained in these instructions w...

Page 8: ...vices are not approved for use with R410A refrigerant and may prevent proper flushing Use a field provided fitting to reconnect the lines 5 Remove the pressure tap valve cores from the 4SHP16LT unit s...

Page 9: ...ine to the equalizer port on the suction line and tighten to 8 ft lbs Table 3 TXV Data l e d o M t r a P r e b m u N 0 3 4 2 T L 6 1 P H S 4 1 0 V X T 4 H 6 3 T L 6 1 P H S 4 2 0 V X T 4 H T L 6 1 P H...

Page 10: ...inger tight then tighten an additional 1 6 turn To Close Liquid or Suction Line Service Valve 1 Remove the stem cap with an adjustable wrench 2 Use a service wrench with a hex head extension to turn t...

Page 11: ...e vacuum pump with vacuum gauge to the center port of the manifold gauge set 4 Open both manifold valves and start vacuum pump 5 Evacuate the line set and indoor unit to a minimum of 500 microns or lo...

Page 12: ...ching indoor coil and outdoor coil with 15 line set For varying lengths of line set refer to Table 4 for If unit is equipped with a crankcase heater it should be energized 24 hours before unit start u...

Page 13: ...to use Proceed with the appropriate charging method Charge Using Weigh In Method If the system is void of refrigerant or if the outdoor ambient temperature is cool first locate and repair any leaks t...

Page 14: ...2 2 1 4 0 2 1 7 7 1 4 1 2 1 2 3 2 4 2 2 1 8 8 2 4 3 2 1 5 4 3 4 4 2 1 2 0 4 4 5 2 1 9 5 4 4 6 2 1 8 1 5 4 7 2 1 6 7 5 4 8 2 1 5 3 6 4 9 2 1 5 9 6 4 0 3 1 6 5 7 4 1 3 1 6 1 8 4 2 3 1 8 7 8 4 3 3 1 0 4...

Page 15: ...1 5 2 4 2 4 1 F 5 1 1 5 8 4 4 5 1 9 8 4 1 5 1 1 9 4 1 5 1 6 8 4 6 4 1 1 g n i t a e H t s y t i c a p a C w o L e g a t S F 0 4 7 3 3 3 9 8 2 3 8 9 9 6 3 5 7 1 5 3 3 6 F 0 5 2 2 3 7 1 1 3 3 3 8 1 1 6...

Page 16: ...ch temperature Approach Values for TXV Systems Approach value is the liquid line temperature minus the outdoor ambient temperature 1 F NOTE For best results use the same digital thermometer to check b...

Page 17: ...Strip Connections High Pressure Switch Defrost Thermostat Low Pressure Switch Reversing Valve Compressor Delay Pins Test Pins K1 Relay K2 Relay FAN DS1 L 24V P2 P5 O OUT DF Y1 OUT HI PS U1 U2 DS2 K3 R...

Page 18: ...The delay helps to protect the compressor from short cycling in case the power to the unit is interrupted or a pressure switch opens The delay is bypassed by placing the timer select jumper across th...

Page 19: ...l a n i m r e t e l u d o m t a t n e s e r p s i e g a t l o v y l p p u S P I R T d e R d n a m e d t a t s o m r e h T t n e s e r p s i 1 Y l a n g i s r o s s e r p m o c e h t t u b g n i n n u...

Page 20: ...i d n i w r o s s e r p m o C 7 e c n a t s i s e r g n i d n i w r o t o m r o s s e r p m o c k c e h C T R E L A w o l l e Y h s a l F 6 e d o C t i u c r i C t r a t S n e p O n u r n i y l n o t...

Page 21: ...o t d e t c e n n o c s i l a n i m r e t Y y f i r e V f f o n e h w C A V 5 0 w o l e b s l l a f s l i o c D E L T R E L A d n a D E L P I R T r e h t e g o t g n i h s a l f C A V 8 2 9 1 h t i w...

Page 22: ...pet urine cottonwood seeds etc Visually inspect the refrigerant lines and coils for leaks Check wiring for loose connections Check voltage at the indoor and outdoor units with units operating Check a...

Page 23: ...lean the outdoor coil with an unpressurized water hose to remove surface contaminants and debris It may be necessary to flush the outdoor coil more frequently if it is exposed to substances which are...

Page 24: ...and provides temporary heat supplied by the auxiliary heat Indicating Light Most heat pump thermostats have an amber light which indicates when the heat pump is operating in the emer gency heat mode...

Page 25: ...Fan ______________ Maximum Fuse or Circuit Breaker________________________ Electrical Connections Tight Indoor Filter Clean Supply Voltage Unit Off ________________ Indoor Blower RPM _____________ S P...

Page 26: ...SE INJURY OR DEATH UNIT MUST BE GROUNDED IN ACCORDANCE WITH NATIONAL AND LOCAL CODES LINE VOLTAGE FACTORY INSTALLED LINE VOLTAGE FIELD INSTALLED 24 VOLT FACTORY INSTALLED CLASS II VOLTAGE FIELD INSTAL...

Page 27: ...ly to you Only Warranty This written Limited Warranty is the only warranty made by the warrantor this warranty is in lieu of and excludes all other warranties express or implied The warrantor does not...

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