Amana Heat Pumps PMH153

Remove the two mounting screws from the control board cover

Tilt the control panel out and disconnect ribbon connector from control board

Remove the two screws securing the top screen to the evaporator assembly

Remove screws on mid partition panel and shift out of the way

Remove the two screws securing the heater assembly to the evaporator

Record dry bulb temperature of return air at conditioner (Step A)

Record dry bulb temperature of air leaving conditioner (Step B)

Record dry bulb temperature on sling psychrometer (Step C)

Record wet bulb temperature on sling psychrometer

Temperature Difference Calculation

Calculate temperature difference by subtracting Step B from Step A

Calculate cooling range using Cooling Range Chart

WARNING: NEVER TEST OPERATION WITHOUT THE UNIT IN THE WALL SLEEVE

Describe any changes in design specifications for air movement

Ensure the unit is installed in the wall sleeve

Cooling Performance Test Thermometers

Secure thermometers in proper locations

Observe thermometer readings without touching or moving them

Disconnect all power sources to the unit

Verify that multiple power sources are not present

Remove screws securing the chassis

Carefully slide chassis out of wall sleeve

Front Panel and Control Knobs Removal

Remove the unit front by tilting the bottom of the front outward and then lift the front straight up

Remove the control knobs on the control panel cover by pulling upward on the knobs

Remove the control panel cover by removing the two screws holding the control panel cover

Tilt the control panel forward to gain access to the wires

Remove the power cord clamp located near the bottom right of the chassis