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Troubleshooting and Solutions

Troubleshooting Displayed on controller and Descriptions

Item Code Description Item Code Description

compressor overload 10 33 discharge temperature too high

116

fan overload 11 40 TH1 malfunction

2 18 water pump malfunction 12 41 TH2 malfunction

3 19 lack of water flow 13 42 TH3 malfunction

4 20 high pressure malfunction 14 43 TH4 malfunction

5 21 low pressure malfunction 15 45 TH6 malfunction

16 46 TH7 malfunction

6 25 EWT/LWT too low

17 47 TH8 malfunction

18 49 TH10 malfunction

7 27 ambient temp too high/low

19 51 TH12 malfunction

8 29 super heat less than 2 protection 20 53 low pressure sensor malfunction

9 32 suction temperature too high 21 F6 communication failure

Troubleshooting Displayed on PCB and Chiller Operating Status

Below is the code and its denotation.

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0/O 2 4 6 8 A C E H N R U

1 3 5 7 9 B D F L P T Y

Code and operating status LED panel

Code Description Code Description

NULL: stand-by

CSP: Cooling mode stop process

REST: Re-set ER30: Normal malfunction

CST: Cooling mode start process

COOL: Cooling mode

Brand	McQuay
Model	MAC060D4
Category	Chiller
Language	English

McQuay MAC060D4 User Manual

Table of Contents

Questions and Answers:

McQuay MAC060D4 Specifications

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