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Service Checks
Symptom
Electrically Dead
Thermostat on – no spark
Valve on, no spark
Spark on, no valve
Spark on, gas supplied, no
ignition of the gas
Flame okay during TF, no
flame sense (after TFI)
Warranty:
The Yunca MEZZO Hanging Patio Heater is covered by a limited two-year Warranty
against defects in materials and workmanship.
All gas components including control, burner, pilot assembly, tubing, regulator and
hose, are warranted for a period of one year from date of purchase.
Damage caused by neglect, improper use, acts of God, theft, or any other indirect,
incidental cause are not covered by this warranty.
This warranty is void if the recommended service schedule is not implemented as
suggested in this manual, and not carried out by a suitably qualified person.
Limitation of Liabilities
Yunca Heating hereby waivers any liability for incidental and consequential damage
directly or indirectly sustained, or for any loss caused by the application of this
product not in accordance with the current printed instructions.
Our liability is expressly limited to replacement of defective goods as per above
warranty. Any claim shall be deemed waived unless made in writing to us within 30
days from the date that it was or reasonably should have been discovered.
Page 10 of 12
1. Miswired
2. Transformer bad
3. Fuse/Circuit breaker bad
4. Bad control (check LED for steady on)
1. Miswired
2. Bad thermostat no voltage @ Terminal TH.
1. Shorted electrode
2. Open HV cable
3. Miswired
4. Bad Control
1. Valve coil open
2. Open valve wire
3. Bad control (check Voltage between V1 and
V2)
1. Position of the spark is not in line with the
gas holes in the burner. Rotate the burner to
align the Flame to engulf the electrodes see
Fig 6
2. Adjust the Burner to bring the electrode to
with in 3 to 5mm of the burner.
1. Bad Electrode
2. Bad S1 or HV wire
3. Poor ground at burner
4. Poor flame (check flame current)
Mezzo Hanging Patio Heater
Cause/Cure
29/10/10
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