User's Manual

Troubleshooting
7
EcoSmart VRF Controller
I, O & M Guide
Telkonet, Inc.
For Use with Firmware Version 2.x
20800 Swenson Drive, Suite 175
Troubleshooting Waukesha, WI 53186
Revision 2.3 [phone]
Page 16 www.telkonet.com
Troubleshooting
If the EcoSmart VRF Controller loses association to any one of its sensors, either the on-board PIR sensor
or the external EcoSense or EcoContact, the thermostat will immediately revert to Occupied mode. This
is done to ensure that sensor association loss does not affect the comfort of the room occupant. Any
setpoint limits (e.g. max/min allowed temperatures) that have been assigned to the thermostat remain
in force.
For more troubleshooting tips, see EcoAir IOM
Problem Potential Cause Potential Solution
HVAC unit does not operate.
Main electrical failure to the unit. Many
units operate on 230 or 277VAC circuits,
so although power is available to the
110VAC plugs in the room, the branch
circuit supplying HVAC power may be
interrupted.
Dispatch maintenance. Verify mains
continuity to the unit.
GFI within the HVAC has tripped. Some
models of HVAC systems (often
PTAC/PTHP units) contain integral GFI
(Ground-Fault Interrupt) systems.
Occasionally, often after a power
outage, inrush current when power
returns can cause GFIs to trip. Most
times, this does not indicate issues with
the unit.
Check and reset units’ GFI systems.
EcoSmart VRF Controller has failed.
Remove the cover’s 4 corner screws,
and verify the J4 Molex connector is
seated properly and facing the right
direction (See
Figure 5 and Table 1-
Wiring
).
Replace the
EcoSmart VRF Controller
with a known-good unit as a
comparison-check.
If the replacement unit functions
properly, contact Telkonet and begin
the RMA process.
If the replacement unit does not
function properly, consult a local HVAC
technician to inspect your HVAC unit.
Door contact is not connected.
Ensure that all door contacts are
connected.