50
4TWL9048A-SF-1C-EN
Continued from previous page
Control Menu
FRC DFT
PRESS ENTER
TEST IN PROGRESS
CTS <value>
TEST COMPLETE
Heat
Pump
Only
NOTES: Forced Defrost
1. System must be running with demand from the thermostat.
2. FRC DFT TEST can be initiated in heat mode.
3. Press ENTER to begin Forced Defrost.
4. Execute Forced Defrost following Defrost (Defrost terminates on Coil
temperature or maximum time override of 15 minutes).
5. When test begins, display TEST IN PROGRESS on line 1 and Coil
temperature value on line 2. Note: Home Screen, under System Status
will display DEFROST.
6. When test is complete display TEST COMPLETE for 10 seconds.
7. If there is a defrost fault condition, stop test and send alert to the Alert
Menu.
Note: Screens will update as the test proceeds.
8. Force Defrost is selectable from either the Control Menu or F-DFT
button on AOC.
LSOV TEST
COOL? YES
TEST IN PROGRESS
COOL/HEAT/COOL
TEST COMPLETE
LSOV TEST
HEAT? YES
TEST IN PROGRESS
HEAT/COOL/HEAT
TEST COMPLETE
Heat
Pump
Only
LSOV Test Notes
1. System must be running with demand from the thermostat.
2. LSOV TEST can be initiated in heating mode or cooling mode. Note:
During HEAT mode, only heat-mode LSOV test is allowed and
avaialble. *Note: During COOL mode, only cool-mode LSOV test is
allowed and available. *
3. Press ENTER to begin test.
4. During TEST IN PROGRESS, display a check mark in front of the current
mode but update screen text as mode changes per test sequence.
5. Test sequence will pulse the SOV coil in the order displayed, and wait
10 seconds between each directional pulse.
6. When test is complete, display TEST COMPLETE for 10 seconds.
7. If there is an LSOV fault condition, stop test and send alert to the Alert
Menu. Note: LSOV test will not available during defrost.
* During LSOV TEST, if a mode change request is received, the LSOV test
will terminate.
EEV TEST
OPEN <500>
EEV TEST
OPEN <XXX>
EEV TEST
CLOSE <500>
EEV TEST
CLOSE <XXX>
Heat
Pump
Only
EEV Test Mode Notes
1. The EEV test is allowed during Idle, Cooling, Heating and Forced
Defrost Modes.
2. Select the OPEN or CLOSE test by navigating left or right.
3. Press ENTER from EEV TEST screen to begin EEV test.
4. Check mark indicates test is in progress and valve position will be
displayed on line 2. Note: Screens will update as test proceeds.
5. OPEN test terminates after 30 seconds.
6. At end of test remove check mark in front of OPEN and return to
controlling valve position or last known position if system is idle.
7. CLOSE test terminates after 90 seconds.
8. At end of test remove check mark in front of CLOSED and return to
controlling valve position or last known position if system is idle.
9. If there is an EEV fault condition, stop test and send alert to the Alert
Menu.
EVACUATION?
PRESS ENTER
EVACUATION
EEV OPEN <500>
Heat
Pump
Only
Evacuation Notes
1. Press enter to execute EVACUATION mode.
2. Entering EVACUATION puts the OD system into a hard lockout state.
3. Send alert Err 187.00 to communicating thermostat.
4. Ignore all thermostat demand until hard lockout is cleared by power
cycle.
5. Open EEV and remain at the full open position until power is cycled
(open ID EEV – Phase2).
6. During EVACUATION mode, display EEV valve position as OPEN <500>
on line 2 (EEV shall be at 500 step position).
7. If there is an EEV fault condition, stop test mode and send alert to the
alert menu.
8. Technician to follow on-screen note to ‘Remove power before
servicing.”
Note: See Evacuation Mode write-up on Control Notes page.
REMOVE OD POWER
BEFORE SERVICING
R
DFT
RE
ENTER
EST IN PR
GRESS
TS <va
ue>
EST C
MPLETE
TTeecchhnniicciiaann CCoonnttrrooll MMeennuu
To Next Page
Loading...