Carrier 38MGRQ24C 3 Series User Manual

Name: Carrier 38MGRQ24C 3 Series
Brand: Carrier
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102 pages

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68 Specifications subject to change without notice. 38MGR-04SM

4-Way Valve

1. Power on. Use a digital tester to measure the voltage. When the unit operates in cooling, it is 0V. When the unit operates in the Heating mode, it

is about 230VAC. If the value of the voltage is not in the range, the PCB needs to be replaced.

Fig. 71 — Test the voltage

2. Turn off the power. Use a digital tester to measure the resistance. The value should be 1.8~2.5 KΩ.

Fig. 72 — Test the Resistance

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