Trane NTXAMT A Series User Manual

HFC
utilized
R410A
PARTS CATALOG (OBBT702)
SERVICE MANUAL
No. OBHT702
CONTENTS
1. TECHNICAL CHANGES ··································· 4
2. PART NAMES AND FUNCTIONS ····················· 5
3. SPECIFICATION ················································ 6
4. NOISE CRITERIA CURVES ···························· 14
5. OUTLINES AND DIMENSIONS ······················ 16
6. WIRING DIAGRAM ·········································· 22
7. REFRIGERANT SYSTEM DIAGRAM ············· 28
8. DATA ································································ 41
9. ACTUATOR CONTROL ··································· 70
10. SERVICE FUNCTIONS ···································· 71
11. TROUBLESHOOTING ····································· 73
12. DISASSEMBLY INSTRUCTIONS ···················· 94
Models
NTXMMX20A122AA
NTXMMX24A132AA
NTXMMX30A132AA
NTXMMX36A142AA
NTXMMX42A152AA
NTXMPH20A122AA
NTXMPH24A132AA
NTXMPH30A132AA
NTXMMX24A132AA
NTXMMX30A132AA
NTXMMX36A142AA
OUTDOOR UNIT
Indoor unit service manual
NTXWPH·A Series (OBHT683)
NTX(Y)WST·A Series (OBHT732)
NTXFKS·A Series (OBHT752)
NTXCKS·A Series (OCHT669)
PLA-A·EA Series (OCH640)
NTXDKS·A Series
PEAD-A·AA Series
PCA-A·KA Series (OCH455)
NTXAMT·A Series

Trane NTXAMT A Series Specifications

General

Type	Air Conditioner
Refrigerant Type	R-410A
Operating Voltage	208/230 V
Series	NTXAMT A Series
Sound Level	72 dB
Compressor Type	Climatuff® Compressor
Warranty	10-year limited warranty on compressor
Cooling Capacity	1.5 - 5 tons (18, 000 - 60, 000 BTU/h)

Summary

SERVICE MANUAL

3 SPECIFICATION

4 NOISE CRITERIA CURVES

6 WIRING DIAGRAM

7 REFRIGERANT SYSTEM DIAGRAM

PUMPING DOWN

8 DATA

8-2. CAPACITY AND INPUT CURVES

8-3. INVERTER OUTPUT FREQUENCY CORRECTIONS

8-4. OUTDOOR LOW PRESSURE AND CURRENT DATA

10 SERVICE FUNCTIONS

10-2. AUTO LINE CORRECTING

11 TROUBLESHOOTING

11-1. CAUTIONS ON TROUBLESHOOTING

Important safety and procedural notes before troubleshooting.

11-2. FAILURE MODE RECALL FUNCTION

How to access stored error codes and diagnose faults.

11-4. TROUBLESHOOTING CHECK TABLE

Comprehensive table linking symptoms, indications, conditions, and remedies.

11-5. TROUBLE CRITERION OF MAIN PARTS

Specific part criteria and systematic troubleshooting flows.

11-6. TROUBLESHOOTING FLOW

Systematic procedure for diagnosing and resolving issues.

11-7. TEST POINT DIAGRAM AND VOLTAGE

1. Outdoor control P.C. board

2. Outdoor power P.C. board

12 DISASSEMBLY INSTRUCTIONS