Test Pins; Demand Defrost Fault Codes - York PHE6B36 Installation Manual

5285477-UIM-A-1016
FIGURE 9: Blower Control
Heat Pump Safety Switch Operation
The unit is equipped with a safety package. The refrigeration system
will be protected against high refrigerant pressure and a loss of charge
switch. If either of these safety switches open, the unit will be shut off
for the 5 minute anti-short cycle time. Once this has expired, a six hour
elapsed run timer begins. If a second opening of a safety switch occurs
during this six hour period, the compressor will be locked out.
Resetting the lockout function is accomplished by:
1. Removing power from the control's thermostat 1st stage (Y) input for
longer than 2 seconds.
2. Removing power from "R" for more than 2 seconds.
3. Shorting the "TEST" pins together for more than 2 seconds while
"Y" is energized.
4. Shorting the "TEST" pins together for more than 5 seconds while
"Y" is de-energized.
Table 18: Test Pins
Test Pin Shorted With Y Call
greater than 2 sec Bypass ASCD
greater than 5 sec Forced defrost
Demand Defrost Fault Code Display
The control provides fault codes using the Status LED display. Table 19
describes the LED displays for fault codes. On the LED display, the
control displays a single fault code only. The control displays the fault
code on the LED display repeatedly with a 2 second off period between
repetitions of the fault code. If multiple fault codes are present at the
same time, the LED displays only the highest priority fault. The other
active faults may be accessed via the LAST ERROR button on the con-
trol board.
16
Table 19 shows the LED display representation for specified faults. For
instance, a red LED display of 10 flashes indicates a control failure.
When any fault code is present, the control does not display the current
status code for the stage of operation.
Table 19: Demand Defrost Fault Codes
Description
High -pressure switch fault (not in lockout yet)
System in high-pressure switch lockout (last mode of
operation was normal compressor)
System in high-pressure switch lockout (last mode of
operation was defrost)
System in loss of charge switch lockout (last mode of
operation was normal compressor)
Low Voltage (less than 19.2VAC) preventing further
relay outputs for greater than 2 seconds
Low Voltage (less than 16VAC) stopped current relay
Without Y Call
outputs for greater than 2 seconds
Show error codes
Liquid Line sensor failure (Open or Shorted)
Clear error codes
Outdoor ambient sensor failure (Open or Shorted)
Control Failure
Electric Heat Limit Switch Operation
The 6HK single phase heat kits utilize a normally closed line voltage
limit switch and a normally closed fusible link. If the fusible link opens, it
must be replaced with the appropriate OEM part and the cause must be
investigated and corrected.
STATUS LED
2 Flashes
3 Flashes
4 Flashes
5 Flashes
6 Flashes
7 Flashes
8 Flashes
9 Flashes
10 Flashes
Johnson Controls Unitary Products