American Water Heater HPE10280H045DV ユーザーズマニュアル

28

Compressor Fault

Check maintenance 

display

Put unit in stand by 

Wait eight (8) minutes 

for compressor time 

out

Turn power off at 

breaker / fuse panel

Verify connections 

and insure they are 

seated fully

Check 

Compressor 

shell temperature

Allow compressor to 

cool; thermal switch 

to reset

Restore power at 

breaker / fuse panel-

press power button 

and verify that unit is 

in effi ciency mode

Raise set 

point 10°

Wait ten (10) seconds 

for compressor to 

turn on

Perform voltage and 

current checks

Fan 

on

Hot

Cool

No

Fan 

on

No

Yes

Yes

(Ω)

C-R

240

3.5

C-S

298

6.1

R-S

380

9.5

C-GROUND

128

>1M

R-GROUND

112

>1M

S-GROUND

321

>1M

*Values with 240 VAC input

Check CN207 on 

control board pin 

1 to 3 for 240 VAC

Voltage 

present

No

Yes

Replace 

control board *

Replace fan 

assembly

*If replacing the control board does not resolve the issue, contact technical support.